The relationship between the PageRank and the Backlinks

Search engine optimization (SEO) is the science of making the most of a Web site in terms of attracting new visitors and potential customers.

SEO can be divided into optimization on page and off page optimization. On page optimization refers to the content on the website. Off-page optimization is to increase the total value of backlinks on the Web site. There is a recent popular worldwide SEO to designate the backlinks as "link juice" Most experts in the field have agreed that more important than in terms of high positioning of page on the results pages page search engine optimization factors out of the page. If a website does not function in the top 10 positions for a keyword, it will receive new visitors.

In a previous article (May 2010), it has been shown that the PageRank is the most important factor in search engine positioning. Google treats differently pages homepage and internal pages. Google is interested in the PageRank of internal pages homepage PageRank. Home compete for a keyword pages receive a boost to their PageRank score.

The relationship between the number of backlinks and PageRank was analyzed for 500 home pages. They have been obtained on Google for many different countries on short and long tail keywords. The number of links have been determined AllTheWeb.

PageRank (PR) sample number (N) number of Backlinks (AB) range (R)

PR1 (N) 64 (AB) 77 (R) 4-524

PR2 (N) 73 (AB) 166 (R) 2 - 2490

PR3 (N) 90 (AB) 615 (R) 13 - 5940

PR4 (N) 62 (AB) (2,458 R) 23-10300

PR5 (N) 52 (AB) 69,311 (R) 48-503000

PR6 (N) 57 (AB) 253,237 (R) 88-5750000

PR7 (N) 57 (AB) 612,450 (R) 852-7280000

PR8 (N 37 (AB) 9,374,989 (R) 173431000 11800)

PR9 (N) 11 (AB) 10,708,000 (R) 32000000 130000

It is not surprising that, generally speaking, higher PageRank is associated with a greater number of backlinks

These data reveal two interesting facts.

a. There is a large variation in the range of backlinks for each PageRank.

(b) the range of the number of backlinks for different PageRanks overlap.

To explain these results, we must understand the value of each link depends on:

1. The PageRank of the login page. All things being equal, a link to a page with PageRank 6 will be twice the value of a link to a page with PageRank 3.

2 Page the more number of links on the link, less the value of each link. A program calculates the value of each link by dividing PageRank page that connects with the total number of links on it. A link from a PageRank 1 page with a single link would have a link of "1" value, but a link to a page with PageRank 5 with 10 links on it would have a value of 0.5. Links to pages with zero PageRank make no link value. This would explain how some pages with 88 links can have a PageRank of 6. The majority of those links come from PageRank pages high with a few outbound links. It is also likely that when a Web site has a large number of backlinks but low PageRank, the majority of the links it receives have if no matter what value.

3. The value of a backlink is probably modified by the relevance of the login page.

4 Provided by Google PageRank is numbers integers, but we know that Google uses several decimal points.

PageRank 5 information we are updated at least three months.

How can we use this information in our SEO campaigns?

A key concept in SEO is the keyword difficulty - the difficulty of obtaining a top positioning on the page for a keyword. It is obvious that the backlink numbers have little sense in terms of juice total link to a Web site or web page. We know exactly how PageRank is calculated, but we have to accept the statement "PageRank is the importance of this page to display Google" Google Best to determine the keyword difficulty modality is PageRank.

Placement of keyword is a competition. Newly created web pages have a PageRank of zero. A new Web site will be able to compete successfully for a few keywords initially until it generates inverse and PageRank links. Need to take great care in the creation of backlinks. Sudden bursts of backlinks will be identified by Google and ignored. A campaign of backlinks accumulation slowly is more efficient. It will take a few months to receive sufficient quality links for PageRank 3 and more time to reach 4 PageRank. It is doubtful if higher PageRank can be achieved without the website offering a sufficient interest to generate links spontaneously.

David Viniker MD FRCOG is a physician trained to practice medicine based on. The principles of the practice of proof he applied to SEO. He has developed a tool keyword new, critical - http://www.KeywordSEOPro.com. Its website http://www.firstwebsitedesign.com provides information useful for beginners and intermediates in the site search engine optimization and Web design.