Alexa Ranking System

Lots of you know Google Page Ranks for sure, but what about Alexa.
First of all alexa don't rank pages but whole sites. Second if Google Page Rank is based on the pages that links to you, Alexa is based on the Traffic and this make it more real!
Alexa compare traffic between sites and give top 500 sites, and also a search engine to search the top 100,000 sites.
Then getting in top 100,000 is so hard? Yes so hard but why not getting linked in the Top 100,000 ?
This is another thing but the thing that I liked most in Alexa is the real ranking
For example : number 1 is yahoo then 2 is google 3 is you tube 4 is live (ms) and 5 is MSN.
With Alexa, you can know the sites that are linking to you and their rank. and now the rank help you more than Google PR because you know the site traffic and how much it can drive traffic to you;)

Alexa.com visit it and give it a try !