I did some really quick investigation into Google PageRank or PR.

A rating is assigned to your website based on a lot of factors. Google mentions 500 million variables and 2 billion terms http://www.google.com/corporate/tech.html.

Google also mentions on the same web page: “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.”(http://www.google.com/corporate/tech.html)

Ratings:

0 to 2 = Below Average

3 to 5 = Average                 example: www.captainharveys.com

6 to 7 = Above Average     example: www.baltimoresun.com

8 to 10 = Elite                     example: www.baltimoreravens.com

If you are not aware there is a simple Firefox plugin called WebRank Toolbar (https://addons.mozilla.org/en-US/firefox/addon/52177) which seems pretty cool. Every website you visit is given a Google page rank rating instantly when you visit it.

Additionally, Alexa, Compete, Quantcast rankings are listed with the number of links in Google, Yahoo, and Bing.

Sean K.
Computer Fitness