Justin Bieber

Alexa Internet, Inc. es una subsidiaria de la compañía Amazon.com con base en California. Es conocida por operar el sitio web alexa.com que provee información acerca de la cantidad de visitas que recibe un sitio web y los clasifica en un ranking. Alexa recoge información de los usuarios que tienen instalado Alexa Toolbar, lo cual le permite generar estadísticas acerca de la cantidad de visitas y de los enlaces relacionados.1

Alexa también proporciona una gráfica donde se puede apreciar perfectamente el crecimiento/decrecimiento de las visitas a una página web, además de la información diaria (solo las 100 000 primeras páginas de la clasificación), media semanal y media de los últimos tres meses.

Alexa Internet was founded in 1996 by American web entrepreneurs Brewster Kahle and Bruce Gilliat.[4] The company's name was chosen in homage to the Library of Alexandria,[5] drawing a parallel between the largest repository of knowledge in the ancient world and the potential of the Internet to become a similar store of knowledge.

The company offered a toolbar that gave Internet users suggestions on where to go next, based on the traffic patterns of its user community. Alexa also offered context for each site visited: to whom it was registered, how many pages it had, how many other sites pointed to it, and how frequently it was updated.[6]

Alexa's operation includes archiving of webpages as they are crawled. This database served as the basis for the creation of the Internet Archive accessible through the Wayback Machine.[7] In 1998, the company donated a copy of the archive, two terabytes in size, to the Library of Congress.[5] Alexa continues to supply the Internet Archive with Web crawls.

In 1999, as the company moved away from its original vision of providing an "intelligent" search engine, Alexa was acquired by Amazon.com for approximately US$250 million in Amazon stock.[8] Alexa began a partnership with Google in early 2002, and with the web directory DMOZ in January 2003.[1] In May 2006, Amazon replaced Google with Live Search as a provider of search results.[9] In December 2006, Amazon released Alexa Image Search. Built in-house, it was the first major application to be built on the company's Web platform.

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