You can find any site's PR here: http://www.checkpr.org/ More about paagerank here: http://www.google.com/corporate/tech.html
PageRank is found on the Google Toolbar. After downloading, in Windows Internet Explorer, click View, Toolbars, Google to turn it off and on. Turn the PageRank tool on and off by going to the blue wrench shown on the toolbar, click Tools for selection.
Page Rank ( PR ) is prominence of any page in Google Search Engine ... this is Update some time ... if you learn about Seo this factor increase ...
PageRank Technology: PageRank reflects our view of the importance of web pages by considering more than 500 million variables and 2 billion terms. Pages that we believe are important pages receive a higher PageRank and are more likely to appear at the top of the search results. PageRank also considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value. We have always taken a pragmatic approach to help improve search quality and create useful products, and our technology uses the collective intelligence of the web to determine a page's importance.
Devised by Google, it measures not only how many links point to a website, but the "quality" of the sites providing the links.
You can use firefox plugin for this seoquake it will be very useful to find pagerank as well all seo techniques. My website my Video Site
In order to have a high pr, you need to build a lot of quality links on your site. Try to download seoQuake, there is a green candy bar below your browser. It indicates how high your pr is.
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.
Page Rank Shows in the google toolbar is also a different that u shows in actual page rank, for example if u have a website called www.xyz.com it's google toolbar page rank is 4. but when u see it 's original page rank was 3.7
PR is actually helping the readers determine if the site is really relevant for such informations they need.
I doubt this definition... You can find thousands of domains that have nothing in terms of info yet PR4-5
PR is Google's property which is used by a number of people to decide whether a site is doing good or not - however, this is not true in all the case as a site with low PR can outrank a site with high PR in search results. And, it is awared in the range of 0-10 with PR10 being the best. Search more on DP to get more information on this