1. 600 million users currently
2. Facebook is founded by Mark Zuckerburg
3. Facebook is a social network service and website launched in Febuary 2004 that is operated and privately owned by Facebook.
4. According to social media today as of April 2010, it is estimated that 41.6% of the U.S population has a Facebook account.
5.Facebook was supposed to be only for Harvard students but is now open to public.
