More on Foxiewire exploding to 7 Quick Intro To SEO

“Google PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves important weigh more heavily and help to make other pages important.” - From Google

How PageRank Is Calculated

0-3: New sites or sites with very minimal links
4-5: Popular sites with a fair amount of inbound links
6: Very popular sites that have hundreds of links, many of them quality links
7-10: Usually media brands (NYTimes.com), big companies or A-list bloggers.

http://www.websitegrader.com/wsgid/591320/default.aspx