I want to thank Phil Craven for the given right to publish the information. You may find the original article at Webworkshop.net
PageRank doesn’t define the page’s rating in search results itself. If it were so, all the PageRank 10 pages were shown on the top of the results and after them PageRank 9 pages etc. Google uses many factors to define the rating such as the headline, the main text, inbound links text and PageRank. PageRank is not even the main factor. It often happens that some pages break ones with a higher PageRank because they are optimized by other factors for a certain searched expression.
One of the main reasons why the request topic page breaks the close-to-topic page with a higher PageRank is the inbound links texts. Google assigns the link text to a page it leads to.
Inbound links inform Google how important a page is; the inbound links texts give the information about why this page is important in the referrer’s opinion.
A higher PageRank doesn’t mean that it has more inbound links than a page with a lower PageRank. It may have a few links from pages with high PageRank and a page with a lower PageRank may have much more inbound links from low PageRank pages. A page with a lower PageRank may have greater potential by different reasons.
There are many reasons why some pages overcome others with higher PageRank. It’s important to know that PageRank doesn’t define the ranking.
If PageRank is going down it’s easy to suppose (it is often so) that Google has imposed a penalty. Mostly it’s really so but sometimes not. Here are some reasons why it’s happening.