Alexa is a company owned by the group Amazon, and it aims to classify all sites on the Internet in terms of the volume of traffic it receives.
The lower your Alexa ranking is, the more traffic to your website receives. The ideal scenario would be to have a Alexa ranking of 1. This would mean, in theory, that your website receives more traffic than any other Web site in the world. Currently, this position is held by Yahoo.com and as one might expect, other sites include Microsoft, Google and eBay.
It is generally considered a site with an Alexa rating 100000 or less has a reasonable level of traffic, but Alexa can be wildly misleading and very easily manipulated.
To understand why the rankings are misleading, you need to understand how Alexa collects the data it uses to create the rankings in the first place. It’s really very simple – Alexa has a free toolbar that you can download and install on your Internet browser and this return to Alexa reports with the details of every Web site you visit.
Alexa can then use this information to see how many users visit a Web site. Then, because ?every? Internet user has not installed the Alexa toolbar, Alexa will multiply the number of visitors by a margin to estimate the total number of visitors that a site may typically receive. The Alexa ranking system is not very reliable but it gives you an idea. If you however want to buy a site from another person don?t be fooled by high Alexa rank.