Abstract
Founded in 1998 by Larry Page and Sergey Brin, "Googol" meaning "follow-up of 100 zeros" is a mathematical term. This number makes it possible to symbolize the incredible number of Web pages listed on Google. Google is one of five most popular Internet sites in the world. In the USA it is the fourth most visited site, after Yahoo, AOL, and Microsoft-MSN and before e-Bay. In France its notoriety is even larger, because it is third behind Microsoft and Orange and in front of Free. The principle of operation of Google, which made its success, turns around an innovation of its creators: the Rank Page. When a document is pointed by many hyperlinks, its Rank Page increases and the higher it is, the more it will have the chance of being posted in the first results of a research. This system thus gives an indication of the popularity of the document among the other documents of the Web. This revolutionary invention immediately was patented by its inventors during the creation of the startup Google.com, and was such a success that it was quickly conceded under license with several gates.
