When we think on interaction function inside controlled environment, undoubtedly the best-equipped site, technological and philosophically, is Facebook. It should be noted that its operations are very simple and straightforward. Allows you to connect and relate in real time and if you prefer, you can do it in invisible mode. Since its inception, Facebook has not ceased its spirit of innovation and growth. This policy has been characterized mainly by the ease with which you can access the page. Startar as members is theirs best "hook". The candidate does not require great knowledge of the internet. All you need is an email account and providing the relevant personal data. Already in, the location of friends works fine. The user can rely on the search of friends in the Facebook page, in addition to the referral system which consists of the suggestions made by friends of friends already. One of the most attractive gifts of Facebook is the section of pictures and videos uploaded by users themselves. The diversity and multicultural orientation, is probably what best defines Facebook. Facebook is all countries, all races, all religions and beliefs. Facebook Social Network is the best choice