This is a social network service which was being found by Mark Zuckerberg in the year 2004 along with his roommates of Harvard university. This networking group initially was among that university students and later on extended worldwide. The access permission was 1st given to the employees of Apple other than Harvard students and after sometime anyone older than 13 years were given permission access. The before version of facebook was Facemash created by Mark himself in 2003.. but this network too suffered many controversies. It was banned in several Islamic countries since it offended their religion and customs. Movie has also been taken based on this The Social Network but the claims that it is inaccurate.