Hi, just a quick question about the pagerank updates: Is every site updated at once, or at different times? The reason I'm asking is this: say I'm linking from a quality PR6 website. During the update, it goes down to a PR4, then my website updates. Will it count as the previous PR6 backlink or a PR4 backlink? So, does it always use old pagerank or the new one? Thanks
no one knows how google acctually counts PR for page. google maintains multiple values for PR. Tool Bar PR and internal PR. (may be something else also) internal PR is realtime and changes every time. tool bar PR is updated in few times a year
PageRank is a numeric value that represents how important a page is on the web. Google figures that when one page links to another page, it is effectively casting a vote for the other page. The more votes that are cast for a page, the more important the page must be. Also, the importance of the page that is casting the vote determines how important the vote itself is. Google calculates a page's importance from the votes cast for it. How important each vote is is taken into account when a page's PageRank is calculated. PageRank is Google's way of deciding a page's importance. It matters because it is one of the factors that determines a page's ranking in the search results. It isn't the only factor that Google uses to rank pages, but it is an important one. Check here : http://www.webworkshop.net/pagerank.html
It will count as a PR 4 site. Since Google starts tracking links almost immediately after a PR update, it will be able to decide that site A will drop to PR 4 in the next update. And based on this, it will decide the PR for site B. And Google will be knowing that site A is already 4, so it will not consider th ebacklink as from a PR 6 site.