I need to know what is the proper strategy for PR update. How often does Google Update PR? Is it the same for all websites or not? What are the factors influencing on that?
let me tell you one thing my brother that google has no specific time frame to update pr usually it happens once in 2 to 3 months but there is no exact date of pr updating ..so keep on working on seo wish you goood luck
Google updates the PR when it wants but it is generally every 3 months or so. I think they must be due to update quite soon if they are still following this pattern.
Strategy? WTH kind of "strategy" could a webmaster possibly have for a PR update?" There are two types of PR... The "actual" PR value you will never know. It is THIS PR value that is used in their ranking algorithm. It is updated constantly as Google crawls and indexes the web, discovers new inbound links to your site (and those linking to you, those linking to those, etc), discovers the loss of inbound links to your site (and those linking to you, and those linking to those, etc). The Toolbar PR though is worthless. It's a mapping or logrithmic scaling of your "actual" PR to a 0-10 scale. Google publishes these at TOTALLY random intervals. Typically they are published every 2-4 months, but I've seen an update even 2-4 weeks after the previous ones. By the time it is "officially" published so that you can see it in the Toolbar, it's already several weeks old. It is ALWAYS out of date. It may show 0/10 and the URL actually be a 2/10 by now... Or it may show 2/10 and the URL actually be a 0/10 now. You're looking at an old value ALWAYS. Does every web site have the EXACT same inbound links? Besides, PR is NOT a site metric... it is a measure of a URLs link popularity. It's based on that URLs inbound links (internal and external). Therefore... No. It is NOT the same for all web sites. It's not the same for all URLs on a given website. It differs from URL to URL. It is the measure of link popularity. In other words, it is a function of the quantity and quality of inbound links to a URL. There are likely lots of "quality" factors, but few are known for sure... For example, NOFOLLOW links will be ignored when calculating PR. Links from URLs known to be under penalty will be ignored when calculating PR. They just got a patent approved last month that was submitted in 2004 to detect affiliated links. It looks like the purpose is to detect sitewide links (like footer links, blogrolls, etc), link farms, link wheels, etc. based on how sites and URLs on those sites interlink... the likely purpose being so that they can devalue those types of links (and in situations where they detect a link farm or link wheel, ignore them all together). If you don't know about PR, I'd suggest you start with Sergey Brin and Larry Page's whitepaper from Stanford which because the blueprint for Google called The Anatomy of a Large-scale Hypertextual Web Search Engine (see section 2.1).
I think they have already skip the 3-4 months update but they might give an update at the end of this year ....But it really depends on Google since last time they have no major major update that happens
Their is no chart opens by Google that it updates PR in every 3 month and Google always calculating PR 24x7 in a week and continue but their is no time fix that when it shows updates.
It's good to know this. They probably take the extra time to monitor questionable surges of certain sites.
Google update Toolbar Page Rank in about 2-3 months. A recent PR update was made last week. But it was not done on a large scale. Only few have noticed changes in their home page PR mostly have got PR updated for internal pages. The Toolbar Page Rank that you see is a visible page rank having NA,0,1...to10 value. But actual PR keeps on changing and is made visible through this Toolbar Page Rank by Google in about 2-3 months.
google has 2 type of pagerank updates Minor pagerank update and Major pagerank update time for update is not fixed but usually they update pagerank each 2-3 months