Quote Originally Posted by Revolutionary Matrix
alexa.com tries to rank the most popular sites on the internet and in order. They mostly track this by the Alexa toolbar that people can install. So the better ranking, the more sites can charge for advertising usually.
yes the traffic in google is the msst thats why so many people advertise in google.and now yahoo and some other sites.
and whats more,if you update your site/blog frequently your alexa rank will be updated frequently as well.