Page ranks are websites which rates your web page just like your blogs. And every page rank site gives different result. Why is that? and What the most effecient page rank website that you know?
There are plenty of firefox extensions that will tell you the page rank and other SEO information of any site you visit. for more on page rank I suggest taking a look at http://bradtheblogboy.com/rank-and-ratings/get-over-your-new-pagerank/
