Google pagerank has been lowered. Why was Page Rank abolished? What is PR, how is it measured and how is it formed

Everyone uses it, but few people know how it works. Google Page Rank is one of the most important parameters for web developers.

Searching through the billions of pages that exist and the millions that are created every day is a more difficult task than you might immediately imagine. PageRank is just one of hundreds of factors Google uses to improve search quality. But how does it work, and what factors influence it and what don't, and what do we know about PageRank?

In this article we present only the facts.

Over the past week, we've looked at a lot of facts and assumptions that seem realistic to us. In addition, we have collected some academic materials on search and 16 useful tools for working with PageRank.

Most important facts are briefly described at the beginning of the article.

How does PageRank work?

1. PageRank one of the many methods used by Google to determine the relevance and importance of a page.
2. Google interprets a link from page A to page B as voice A in favor of B, of course, not only the number of votes is taken into account, but also the quality of voting pages.
3. PageRank based on the number of incoming links, but not only on it, relevance and quality are also important.
4. Not all links have the same impact on PageRank.
5. If there is only one link on a page with PR8, then the site to which it links will receive all the PR that it can transmit, but if there are 100 links, then each link will transmit only part of this PR.
6. Bad inbound links have no impact on PR.
7. PR takes into account the lifetime of the site, the relevance of incoming links and their lifetime.
8. Content is not taken into account when calculating PR.
9. PR is calculated not for the site as a whole, but for each page separately.
10. Every incoming link is important, with the exception of links from banned sites.
11. PR is not just an integer value from 0 to 10, it is a real number.
12. Each successive PR level becomes increasingly difficult to achieve, presumably using a logarithmic scale.
13. PR is recalculated constantly, but the data for the toolbar is updated every few months.
14. Google tries to find pages that are solid and relevant at the same time.

Factors Affecting PageRank

1. Frequent website updates do not automatically increase PR.
2. High PR does not guarantee high positions in search results.
3. Directories DMOZ and Yahoo! do not increase PR automatically.
4. .edu and .gov sites do not automatically increase PR.
5. Internal pages do not necessarily have less PR than the main one.
6. Links from Wikipedia do not automatically increase PR.
7. Links from nofollow attribute do not affect PR.
8. Effective internal links influence PR.
9. Links from thematic sites have a stronger influence.
10. The text used in a link can often be more important than the PR of the linking page.
11. Outgoing and incoming links to high-quality thematic sites have a positive effect on PR.
12. Several identical links from one page are counted as one.
13. A site may be banned for links to banned sites.

1.1 What is PageRank?

• PR is just one of the methods used by Google to determine the relevance and importance of a page. [PageRank Explained Correctly 6]
• Google uses many factors to rank pages, PageRank is one of the best. PR reflects two important points, how many pages link to this one and what level of pages link to it. Five or six links from sites like www.cnn.com 7 or www.nytimes.com 8 can be more useful than many more links from less reputable sites. [ Google Librarian Central 9 ]
• PR can only reflect approximate page quality, but has nothing to do with its thematic relevance, which can only be determined taking into account the context of the links, and factors such as density keywords, page title, etc. [PageRank: An Essay 10]

1.2 How does PageRank work?

• Nobody knows exactly how Google calculates PR.[Google PageRank Explained 11]
• PR(A) = (1-d) + d(PR(t1)/C(t1) + … + PR(tn)/C(tn)). This is the approximate formula for calculating PR, where t1-tn pages linking to A, C(tn) is the number of outgoing links to the corresponding page, d coefficient is usually equal to 0.85.
• We can assume that PR is calculated by the formula PR = 0.15 + 0.85 * (part of the PR of each linking page is transferred to ours). The amount of PR that a page can use to vote for others is slightly less than its own PR, to be exact 0.85 * PR, this amount is divided between the pages it links to. [Google's Page Rank 12]
• The algorithm for calculating PR is based on the distribution of the page’s own PR between the pages to which it links. For example, if a page with PR8 has only one link, then the page it links to will receive all the available PR, but if that page has 100 links, then each of them will only receive a hundredth of the available PR. [The Importance of PageRank 13]
• As a result of this algorithm for calculating PR, a link from a page with PR4 and 5 external links is more effective than a link from a page with PR8 and 100 external links. The PR of linking pages is important, but equally important is the number of outgoing links they contain; the more outgoing links, the less PR each will receive. [Google's Page Rank 12]
• PR uses inbound links as an indicator of a page's importance. Google interprets a link from page A to page B as a vote from page A in favor of page B. Not only the number of votes is taken into account, but also the quality of the voting pages. The higher the PR of the page, the higher value has her voice. [ Google:Technology 14 ]
• Not all links are equally useful. The higher the PR of the linking page, the more PR it transmits, but you also need to take into account that this PR is shared equally between all the pages it links to. Therefore, a link from a page with PR4 and a single outgoing link can yield more than a link from a page with PR5 and 100 outgoing links. Typical example Everyone knows the million-dollar home pages, such a page with PR7 and hundreds of outgoing links, despite its importance, transfers negligible PR to other pages. [Google PageRank Explained 11]
• Every next level PR is achieved much more difficult than the previous one. When calculating PR, a logarithmic scale is used, which means that going from PR0 to PR1 requires one step, PR3 is somewhat more difficult, PR4 is even more difficult, and PR5 is much more difficult. [Google Page Rank FAQ 15]
• PR is calculated not for the site as a whole, but for each separate page and is recursively linked to the PR of the pages that link to it. [The Page Rank algorithm 17]
• Google combines PR with sophisticated text search techniques, analyzes many aspects of a page's content and the pages that link to it to find the best pages to match the user's query. [What Is Google PageRank? 18 ]
• PR is recalculated constantly, but the data for the toolbar is updated every few months, new sites are assigned PR0. [Google PageRank Explained 11]
• PR is not just integer values ​​from 0 to 10, PR is a real number. It is correct to think of PR as a real number, because in internal calculations we use many gradations, and not just the values ​​​​from 0 to 10 displayed in the toolbar. [Matt Cutts 19]
• The robot does not analyze sites instantly. Often it takes two full updates for all incoming links to be detected, counted and displayed as incoming links. [Google FAQ 20]

1.3 Factors influencing PageRank

• Every incoming link is important, with the exception of links from banned sites. PR is a kind of voting system; every link to a page is a vote in its favor. Pages with high PR are considered more important and their votes carry more weight in some cases, but in general, the more incoming links the better. [Google PageRank FAQ 21]
• Adding new pages can reduce PR. This effect is that the total PR of the site increases, but one or more old pages lose part of the PR, due to which new ones gain it; the more pages are added, the more PR the existing ones lose. On large sites this effect is not noticeable, but on small sites it can sometimes be observed. [PageRank Explained 12]
• Reduced PR. A page's PR may decrease due to the disappearance of some important links that gave it PR, or a drop in the PR of pages linking to it. [Google PageRank FAQ 22]
• Headings (h1, ..., h6) and strong tags are important, but do not affect PR. Use meta tags, headings and b, strong tags, but keep the content readable and useful. Pay attention to the text surrounding the keywords, search engines are getting better at working with semantics, so the context of the keywords is very important.
• The efficiency of the internal structure of the site is of great importance. Pages on a site should be linked in as simple a way as possible, ideally there should be no pages more than three clicks away from the main page. [23]
• Links from and to thematic sites with high PR are very important. The closer the topic of the pages, the more PR the link conveys. Links to reputable sites with similar topics show search engines that the site is useful to visitors, this is not always true for sites that have been around for several years and have high rankings in Google. By linking only to quality sites, you can gain some advantage over your competitors. [Let Google's Algorithm Show You The Traffic 23, FAQ 15]
• The link text is important. The more specific the link text, the better than Google can relate it to user requests.
• Link farms (link cesspools) are penalized. Google is interested in pages containing less than 100 outgoing links, pages with big amount links are considered link farms and are penalized. [Google FAQ 24]
• Incoming links from popular sites are very important. If a page is linked to by pages with high PR, it receives part of their reputation.
• A site can be banned if it links to banned sites. Be very careful with outgoing links, do not link to suspicious sites (link dumps, banned sites, etc.), Google may penalize your site for such links, always check the PR of the sites you link to. [SiteProNews 25]
• Fraud is punishable by penalties PR and can lead to a ban. Hidden text, redirects, cloaking, automated link exchange and other actions that contradict Google's quality guidelines 26 may lead to a site ban from Google.
• Google takes into account the life of the site, the relevance of incoming links, and the time of their existence, if the incoming link is not relevant it will not generate much PR.
• Myth: the higher the PR, the higher the position in search results. Of course, pages with high PR are ranked higher in search results than competitors with lower PR, but we must not forget that Google takes into account the context of incoming links, and only those links that are associated with words in the query allow you to rank high in search results for this query . [

Greetings, dear readers of the blog site. Today we will continue to consider the main indicators of the success of promoting your website and will dwell on the concept of Google PageRank, or PR for short. we talked in the above article

Today we will look at all these same issues in detail, but in relation to the PageRank indicator.

The importance of Google and its PageRank for a Runet webmaster

The role of PR It will be especially important when ranking pages for a single-syllable query (when the user enters only one word in the search bar). In this case, it turns out that a lot of documents will be relevant this request. It is in this case that our hero will play key role when determining positions for these documents that are identical in relevance (compliance with the entered query).

The PageRank indicator was invented by the founders of the campaign (Sergey Brin and Larry Page), who then successfully applied it in their currently most popular search engine in the world. The merit of this little belly in their success is undeniable. Let's now take a little closer look at what PR is, how you can increase it, how to measure it, and how to set a counter that displays its current value.

Its main difference from the Yandex TIC is that it is calculated for each page of the site (document) separately. But the same scheme for assessing authority from the scientific world is taken as a basis, when the rank of a particular author depends on the number and quality of references to him from scientific works other authors.

The more instructions and the better quality they are (the student can put an instruction in his course work or a professor, with heavy weight in the scientific world), the more authority it will receive this work by this author.

Those. The main criterion when calculating PageRank, as well as when calculating the TIC, are links to site pages. But unlike the Yandex bloater, what is assessed here is not the authority of the author of scientific works (the entire resource), but the authority of individual scientific works of this author (website pages or, in other words, documents). True, Yandex has a similar belly meter (VIC), but it is little known, because no one will ever be able to even approximately estimate its value.

It's true, because various works The same author may differ significantly in the quality of execution and relevance of the information contained in them. It is thanks to this selectivity that it becomes possible to use this belly meter to rank documents in search results, if according to the main indicators of relevance they turn out to be equally significant.

Page ranking in Google search results it can be simplified as follows:

1. First, the machine finds in its main index (there is also a snotty index that is not searched) all documents that contain words from the user’s request
2. Then, among them, those with a higher density of keywords (from the user’s request) in the text of the document, in its TITLE, in accent tags (H1 -H6, STRONG, EM), etc. are selected.
3. Also, leads from other projects to these documents. This text also analyzes the density of keywords from the user's query. This thing is called link ranking.
4. Well, in the end, the results obtained can be slightly adjusted taking into account the indicator Page Rank. As a result, documents with equal relevance for a given query will be placed in their places in the search results. Yandex also uses its WCI (weighted citation index) to adjust its results

What is PR, how is it measured and how is it formed

In essence, it is a kind of measure (criterion of value) of a particular page on the Internet. Its value depends on the number and quality of backlinks leading from other pages to this document. The more links there are, the higher the PR value will be.

But it is also very important what static weight value the page from which links to the document has. The fact is that the link transmits part of the PageRank value of the donor page.

But that's not all. The fact is that if several links are placed from the donor’s page (one of which is to our document), then the transferred static weight will be divided equally between all these links.

The amount of PR that a page can transmit via a link is much less than it eigenvalue(previously it was 85 percent, but now, according to observations, it is already less than 10%). This amount of status will be divided between the documents to which it refers.

The ideal case would be if a link is placed to your document from a page with a Page Rank of 10 (maximum value). And it will be absolutely great if she is the only one.

In this case, a gigantic weight will be transferred to your document, probably sufficient for the PR of your page to rise to 9. If several more links are added from this ideal donor (including yours), then the weight transferred to each of them will already be divided you won’t get even a nine for the total number. It's a shame, isn't it? And I wanted it that way.

Yes, I almost forgot to talk about how and in what terms the PageRank value is measured, as well as how to prohibit the transfer of votes (weight) via a link leading from the pages of your project. First, about units of measurement. There are two scales and, accordingly, two meanings.

The first of the representation options expresses it as a real number and has a linear nature of change. Those. an increase in this value will be proportional to the increase in the amount of static weight transferred to this document via links from other Internet resources. This number is updated almost in real time and is constantly taken into account when ranking.

The second version of the PR presentation is derived from the first. This value is called toolbar value and has a range of changes from 0 to 10 (a total of eleven possible options). The toolbar digit is obtained from real number according to a law close to logarithmic (highly nonlinear):

Real number indicating real status	The resulting toolbar number
from 0.00000001 to 5	1
from 6 to 25	2
from 26 to 125	3
from 126 to 625	4
from 626 to 3125	5
from 3126 to 15625	6
from 15626 to 78125	7
from 78126 to 390625	8
from 390626 to 1953125	9
from 1953126 to infinity	10

The toolbar number is not updated often - once every few months. His null value usually have new resources or projects that have been banned by Google, and only a few colossi on the entire Internet have a number equal to 10.

As you can see from the table above, at first increasing Page Rank will not require many links with good weight, but with each new number its further increase becomes more and more difficult, and often an impossible task.

On average, well-optimized (both internally and externally) resources have a PR home page equal to 4 or 5, and some even achieve six, but further growth of this indicator is only possible for very serious and global projects.

So, the limit of our dreams and possibilities is most likely 6, and even then it’s unlikely. Will you say that I am a pessimist?! No, I'm more of a realist. But if you suddenly get (or have already received) a Page Rank equal to 7, then please write about it in the comments (and be sure to put a link to the https://site so that everything will be fine for me too).

We prohibit the transfer of static weight through external links

In principle, this is not at all difficult to do. Google made sure that it was possible not to give your vote to another resource. To do this, it will be enough to add the A attribute to the link tag (a little higher I already provided a link to an article where this is all explained in detail). For example like this:

Everything about creating websites, blogs, forums, online stores, their promotion in search engines and making money on the site

After this, the state weight from the donor will not be transferred to the acceptor (the document to which the link leads). Why might it be necessary to prohibit weight transfer? Everything is quite simple here. You just need to remember that PR can be transmitted not only through links leading to other projects, but also through links leading to internal pages your own resource.

Now imagine a situation where you have ten internal and ten external links in one document. There are twenty in total. The static weight transferred for each of them will be equal to one twentieth of the maximum possible that a given document (donor) is capable of giving. Consequently, acceptors will receive one-twentieth of the maximum possible weight (page rank).

Now imagine that you have added the attribute to all external links, thereby prohibiting the transfer of weight through them. As a result, all the weight that the donor is able to give will be distributed among ten internal links. For each of them, a weight of one tenth of the maximum possible will be transferred, which is twice as much as in the case without using the attribute.

So you prevent leakage PageRank from your project, accumulating it inside and increasing your own bellies. As a result, these pages of your resource, all other things being equal, will be able to take a higher place in the search engine. Google results due to saved status.

P.S. There is an opinion that now Google has somewhat changed the effect of the attribute and your internal documents in the example given will still receive one twentieth of the weight, and everything else will leak to God knows where. The opinion is controversial, but...

However, I'm still in mandatory I write it in A tags and other elements. And even when posting guards for a fee through the GGL, RotaPost, GetGoodLinks, Miralinks or WebArtex exchanges, often the main requirement is the minimum number of links through which weight is transferred.

What can lead to an increase (decrease) in PR

The weight transferred via a backlink depends on the PR value of the donor document and the total number of links originating from it. Please note that I spoke not only about external, but also about internal links. Thanks to this wonderful opportunity and proper internal linking, you can increase PaidRank for most of the documents in your project, even without using external links at all.

When calculating PageRank, all external and internal backlinks, except those that lead from banned sites. Those. Your ill-wishers will not be able to harm your site by placing links to it from the pages of banned websites (after the introduction of the Penguin algorithm in Google, this statement can be considered controversial). But if you yourself post backlinks to banned projects (or simply to outright GS), then a sad fate may befall you.

The static weight of your documents may decrease if some of the leading links to them suddenly disappear or the Page Rank of some of them decreases. Despite the fact that status influences the position of documents in Google search results, high value PR does not at all guarantee a high position in search results. Otherwise, for any query entered, only supertrusts with PR 10 and 9 would be in first place in Google search results.

Identical links placed from one page will be counted by Google as one, and links from a web page to itself are not taken into account at all when calculating PageRank (you cannot vote for yourself). By the way, it is not a fact that the main one will have the highest status indicator among all the others. There may be internal pages equal or even superior to the main one in Rank value.

It must be taken into account that search robot Google is quite inert and does not take into account all backlinks instantly. It may take time (up to several months) to fully account for them.

Where and how you can see the Page Rank of any site

You can enter one or more URLs into the provided form, and then click on the “Check PR” button:

This method allows you to carry out a mass verification of PaidRank for a large number of projects at once. However, in most cases, the best option would be to install SEO extensions for the browsers you use. In this case, the PageRank value for the page opened in the browser will be displayed on its panel.

For Opera browser exists, as well as:

Counter options for displaying PR

There are several options for counters that display Paydrank for the document on which they are installed. True, there are options that show the PR of only the main page, because it is, as a rule, the highest and should make a greater impression, for example, on advertisers. You can see an example of such a counter.

You can get the code for a similar informer. In the window that opens, you will need to enter the Home URL in the “Site URL” field (its value will be displayed in this case on the created counter):

Click on the “Submit” button, and then select the desired informer design. As a result, an area with the result code will appear:

All you have to do is insert it into the right place on your website template or into the text of some page (for example, intended for advertisers).

Choose appearance informer and copy its code into the area located to the right of the counter image. You will need to insert this code into your project template, as a result of which it will show PR to visitors open page. For example, like this:

As a guide to inserting code into a template, you can use tips on inserting attendance counters into Joomla template, WordPress and SMF - and .

How to check PR for all pages of your or someone else’s website

It is often necessary to find out the Page Rank indicator for all documents available on a project. Doing this individually can be very time consuming. It is for these cases that quite convenient services have been created.

Also, to understand how the Google search engine treats you, it will be useful to know how many of your documents are in its main index, and how many are in the additional one, which is often called the Supplemental Index. Why is it so important to know this? Well, everything is quite simple here. The search is carried out only for documents located in the main index.

Site pages located in additional index(Supplemental Index) are not included in the search, except in very rare cases. Therefore, from the point of view of attracting visitors, they are completely useless ballast.

Of course, there is no need to get rid of them, but it will be useful to know their number. Read about all this in detail in the article “”.

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Google PageRank - what is it?

Website PR is...

PageRank (PR) is a website evaluation criterion used by the Google search engine. This indicator indicates the authority of the Internet resource from Google’s point of view. The main difference between PageRank and TCI is that this indicator is calculated separately for each page of an Internet project. When forming the value, it is taken into account internal linking, as well as links leading from other sites.

The PR indicator is related to the number of links leading to the site. To ensure an increase in PageRank, you can place paid links, register in “white” directories, and exchange hyperlinks with web projects on a similar topic. Enough effective method Articles are considered to contain a link to the promoted site.

How to check a website's PR - installing an informer

If you wish, you can install a special counter button on the pages of your web project. This will allow you to check the pagerank of a site by simply visiting your resource. You can get the informer code via this link http://mainspy.ru/schetchik_tic. The counter will allow you not only to check the website’s PR, but also to demonstrate this indicator visitors (including potential advertisers).

Website PR - what is it? Find out using specialized services

There are special online services that allow you to determine PageRank. To check the PR, you can go to http://www.cy-pr.com/. This service provides a large number of information about the Internet resource:

• expiration of the domain registration period;
• hosting, server IP address;
• download speed;
• page encoding;
• visibility in search engines, etc.

If you are using Firefox browser or Internet Explorer, then checking PR pages can be done using special application Google Toolbar.

Mass PR check is performed by the service http://www.raskruty.ru/tools/cypr/. Each Domain name must be entered in special form With new line. By using of this instrument A mass PR check of up to 100 sites is carried out.

How to find out PageRank using programs

Very convenient tool for SEO analysis is free program Site Auditor. It allows you to find out PR, as well as check the position of an Internet resource in search engines. In addition, the webmaster will be able to determine how many pages of the site are indexed by search engines. You need to enter the domain name in the http:// field to determine the PR of the site; the check is carried out within a few seconds.

How to check PR pages

If you need to set the PageRank of a single document, you can use the service http://xseo.in/ipr. This system makes it possible to check up to 35 documents in one session. In addition, you can add an RDS bar module to your browser, designed for comprehensive SEO analysis. Besides PageRank, this module determines the site's CMS, the approximate number of incoming links, and many other indicators.

PageRank- This important indicator, which can affect search results on Google. It is PR that is key point in search engine work Google systems, which predetermines the site’s position in search results for various queries.

Today we will figure out what it is and how to check it.

Almost every website you can find

and - directly depends on search engine in terms of receiving constant traffic. That is why everyone knows that you should be “friends” with the search engine and adhere to all its rules, so as not to fall under such unpleasant things as pessimization and, especially, a filter.

When viewing various TOP sites for certain requests, you can notice competition for a particular request that arises between them - how are they resolved? similar situations from the search engine side? Of course, there are indicators and criteria by which content is sorted and the site receives a kind of rank. The more the site follows the rules and contains quality content- the higher the positions he will have, the rest will be located below him, or will have problems with issuing. Problems can be, as I already wrote, in the form of pessimization or a filter: among which we have already considered the sensational ones, .

What is PageRank

First of all, it is worth noting that such an algorithm as PageRank was invented by Stanford University graduate students Larry Page and Sergey Brin in 1998. The patent was created only in 2001 and it belongs to Stanford University, not Google.

PageRank- one of the algorithms link ranking, which assigns each document its own authority index (page importance), which is expressed as a certain value (takes on a value of 0-10). Specifics this parameter is that it is calculated depending on . In simple words: PR is the total authority of a page, which directly depends on all the sites linking to it and the final result of the total weight of these links. It is the weight of all links that will determine such a value as PageRank.

Generally, this algorithm similar to, the only difference is that PR is calculated for each page, and TCI for the entire site in general. The basis is similar, taken from the scientific world, according to the principle: the more

The more authors refer to a work, the higher its quality and importance. In general, the parameters should be of a similar nature, but still have their own specifics, which we can notice everywhere.

It should be noted that PR does not take into account the number of links, but rather their weight - so great amount spammy links will not make a picture, not to mention subsequent sanctions from various filters. This is another reason to check links carefully and choose only high-quality donors, in order to avoid all sorts of problems, including PageRank.

If you think about the differences between the Yandex and Google algorithms, then it’s worth remembering such an indicator as, the operating principle of which is kept under seven locks by the search engine employees. It makes sense to draw a parallel with the PR algorithm - judging by all the facts, they really have a lot in common... But, alas, we are not allowed to know this. At least for today.

In any case, the existence of such an algorithm as PageRank and VIC is quite natural: even the work of one author can have completely different quality or importance of an individual article in any field (even if we take the original one - science). Not to mention the fact that there may be a whole team of authors on the site - there should be a different weight for each page, if we talk about quality content.

Features of PR

As you already understand, without such an indicator as PR there is no question of search engine promotion The site cannot exist - you need to work with it. I want to say right away that PageRank will not be able to directly influence the promotion of the site, since it is auxiliary, but very useful.

Its role is precisely to resolve the situation that I described at the beginning about the competition of several sites for the same request - it is PR that can predetermine the outcome and position it on best positions those sites that have

this figure will be high.

In addition to this situation, it will help us in such an interesting situation when the user enters an ambiguous query. Such queries most often include one-word keywords - “site”, “salad” and others general queries. There will be a huge number of relevant documents that will at least somehow be involved in this request. It is in this situation that PageRank will play that decisive role and can even provide us with better positions in such a request.

PageRank has 2 meanings:

• real;

In turn, it is constantly updated and participates directly in the ranking. It is this indicator that measures exact weight transmitted by links.

• toolbar;

It comes from a real value and represents a certain assessment that can take the value 0-10. It is updated quite rarely - about once a month.

Most often, young projects or those who fell under the filter have a zero toolbar value. Achieve more and more high level quite difficult, and some set the limit at 5.

Real value	Toolbar value
0,00000001…5	1
6…25	2
26…125	3
126…625	4
626…3125	5
3126…15625	6
15626…78125	7
78126…390625	8
390626…1953125	9
1953126…∞	10

It is worth noting that increasing PR can be achieved not only by external links from other sites, but also by internal linking of pages - which we will look at shortly. Thus, you can increase your PR score without resorting to using external links at all, but the ideal option is a combination of both methods.

How to check PageRank

There are many services for checking PR, the choice of which depends only on you - since almost all of them do their job correctly.

- copes with its task perfectly. The service’s interface is extremely simple: just enter one or more links to the site, click “check PR” and get the PageRank value. It is ideal for bulk checking of one or even several projects - which greatly simplifies the task and makes the service pleasant to use.

In addition, there are a lot of extensions for any browser, which allows you to view PR and other SEO indicators without using the service - in real time. This is very convenient if there is a need to constantly view data about the site.

If you want to view information about your PR indicator on the site, you can install a special counter that can be provided by a service such as. IN this service You can receive not only PR, but also TCI of the site in the form of a small widget. You can read how to install it in - the algorithm for installing the Yandex Metrica counter is described there, but in this way you can install absolutely any counter. The only difference can be the location - if the counter is needed in the footer, then it must be placed in required template, without breaking the tag structure.

For mass or automated verification all pages of the site can be used special services, which we will talk about in the next article. With this I say goodbye to you - I hope the information was useful and relevant for you!

7.3 Google PageRank.

Google PageRank
Theoretical basis. Google was the first to introduce reference factors. The algorithm received Google name PageRank and revolutionized search quality. The algorithm is based on the idea of ​​citation, accepted in the scientific world. The more often other scientists quote and refer to a scientist in their works, the more weight the “quoted” person has, accordingly. It's the same with websites - the more links to this resource, the higher its probable value.

It is clear that it is necessary to take into account not only the number of links, but also their quality. The “voice” from the Microsoft website has much more weight than the voice from Vasya Pupkin’s home page.

The PageRank algorithm uses a model for how users follow links on websites. It is assumed that the person selects the first page randomly from all Internet pages. In life, of course, this is not the case - there are popular sites and it is from them that work on the network begins. But in our mathematical model We initially consider all pages equal.

The visitor then follows the links to other sites. Again, we do not take into account that some links are more visible, while others are “hidden” at the bottom of the page in a single-pixel font. We consider all links equal, and the probability of clicking on each is inversely proportional to their number. If there are 10 links on a page, then the probability of clicking on any of them is 1/10. A “fading coefficient” is also introduced: we assume that with a 15% probability a person will not follow the links at all, but will simply close the page and start browsing with a new one, randomly selected.

Now let's look at how the algorithm works using an example. Let's say we have three bloggers.

1. Vanya Ivanov. He is 10 years old and yesterday his parents bought him a book on HTML, after which Vanya made his first Internet page.

2. Petya Petrov. He has been actively writing on his blog for several years. True, I haven’t achieved much popularity, but sometimes it gives off some useful information and it is rarely read, but still read.

3. Artemy Lebedev. If my memory serves me correctly, at one time he was considered the most popular blogger on the Runet.

In the first step, all three pages have equal “weight”. Let's say 100 units of weight each. Please note that Vanya Ivanov has 2 links on the page, and each of them transfers 50 units of weight. And Tema Lebedev has 30 links, and each “weighs” only 3 units.

We launch the PageRank calculation algorithm and process all Internet pages and connections between them. After a complete recalculation, we will get a completely different picture than we had at the beginning.

The weight of Vanya Ivanov, whom no one refers to at all, remains 100 units. The weight of Petya Petrov's blog became 500 units, because... Petya is still sometimes “quoted” online. The weight of Artemy Lebedev’s blog became equal to 10 thousand units - links from many different sources were taken into account.

Those. after the first recalculation we received a rough, but still assessment of the sites’ authority. Of course, the results are far from ideal, because... at the first step we had a monstrous inaccuracy (Vanya Ivanov = Petya Petrov = Artemy Lebedev). Therefore, we launch a second recalculation or, in mathematical terms, a second iteration. This time we are working with the weights that we calculated in the first step. Please note that Vanya Ivanov’s link still “weighs” 50 units. But Artemy’s link instead of 3 units of weight began to transfer 300!

After a certain number of iterations, the site weights will practically stop changing. Those. the numbers obtained at the current and previous steps will be almost equal. This means that the calculations can be completed - we were able to measure the “weight” and authority of each page, taking into account the structure of all Internet links.

Practical implementation . The specific value of Google PageRank can be seen with using Google Toolbar (see screenshot).

Here it should be said that “toolbar” PR is calculated on a logarithmic scale. Those. if to get a “green” one on the toolbar you need to have 1000 units of real weight, then a toolbar two will cost not 2 thousand, as one might think, but 20 thousand. And a three will cost 500 thousand conventional weight units. All numbers are given as an example, but I think you get the idea. Every next step the toolbar ladder is many times more difficult than the previous one.

PR allows you to visually assess the link popularity of a site. Roughly you can focus on the following numbers:

PR 1 Any site that is undergoing at least minimal work
PR 2-3 Healthiest "metric" for most commercial sites
PR 4-5 Seriously promoted, popular resources
PR 6 and above For ordinary sites this is an almost unattainable figure. Very serious projects that can be counted on one hand receive such PR.

For comparison:

This site (www.site)- PR 4
SearchEngines.ru– PR 6
Google.ru– PR 7
Yandex.Ru– PR 8

It should be noted that in English. On the Internet, PR numbers are usually one higher than in RuNet, apparently due to some peculiarities of the calculations.

Practical use . Now let's see how we can benefit from Google PageRank for website promotion.

The very first thing that comes to mind is purchasing and placing links. The higher the PR of the page, the more weight the link from this page will give us. In fact, this is exactly how PR is used.

Several years ago, website promotion was based on this indicator. Whoever bought more links with a higher PageRank ended up in the TOP of Google. Now everything has changed radically.

Although real weight pages are recalculated constantly, its toolbar equivalent is updated very rarely. About once a year. Those. The PR values ​​we see resemble the light of distant stars. We look at the sky and see light that set off on a journey a thousand years ago.

- “classic” PageRank has not affected rankings at all for a very long time. For any link, a lot of different indicators are taken into account - the proximity of the donor and acceptor topics, location on the page, anchor text, number of live clicks on this link, etc. and so on. PageRank measures the static weight of a page, without taking into account all these factors.

Thus, Google PageRank is ONE of the indicators that we will take into account when searching for “donors” to link to our resource.

My book was published in paper version. If this tutorial turned out to be useful for you, then you can thank me not only morally, but also in quite tangible ways.
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