The Google search engine is at the time of writing the most popular search engine on the Internet. It has gained its market share for two reasons. The first reason is the simplicity of its interface. The second reason is the fact that it employs a sophisticated algorithm which determines the importance of a Web site by the number of links that exist to that site from other sites. Google Inc., the company that is associated with the search engine has used the income from techniques such as search ads to diversify to the point where it is a major Internet company that threatens the dominance of Microsoft.