Alexa is a special website world rankings released the website. To search engine 936.2 Alexa founded in April 1996 (USA), the purpose is to let the Internet users in a virtual world resources share, while more involved Internet resource organization.
Basic introduction
Alexa every day in online collection over 1,000 GB of information, not only give up to billions of url links, and for which each website ranking. Can say, Alexa is currently has the largest number of URL, ranking information release in the most detailed site.
