Facebook is one of the world’s most used social networking website which has been launched since February 2004. It has more than 800 million active users; however every user must register themselves before using the site. A personal profile will then be created by the user about them and they can then start adding and interacting with other user’s profiles.
Face book was founded by Mark Zuckerberg which started off in Harvard University in the USA where it began to expand. By January 2009 Facebook was ranked as the most used social networking service by worldwide active monthly users.