Facebook is a social network launched on February 4, 2004. It was founded by MarkZuckerberg, Dustin Moskovitz, Eduardo Saverin and Chris Hughes, a former studentof Harvard University. Initially, membership of Facebook was restricted to students of Harvard University. It was expanded to the Massachusetts Institute of Technology(MIT), Boston University, Boston College and to all Ivy League schools within twomonths. Many individual universities were added in following years. Eventually, people with e-mail for universities (for example,. Edu,. Ac.uk) around the world wereelected to join the network. On 27 February 2006, Facebook began to also accepthigh...