Alexa Ranking ????

[abiji]

Ok first of all i want to know how does Alexa Ranking works ? I mean how they figure out the traffic ranking of our website.

Second is Alexa important ? I mean while buying a website ?

[quickin]

Alexa Rank System bases its ranking schema on the level of traffic each website receives from the number of people who visit a website with the Alexa toolbar installed. Webmasters, advertisers and ad networks use Alexa rank as a gauge to determine the worth of a link on your website. The drawback for Alexa ranking is that it is heavily skewed towards websites which have a large webmaster/tech audience.