Facebook got its start in 2004 when founder and CEO Mark Zuckerberg started “The Facebook” as a way for Harvard University students to connect. Eventually, the social network expanded to other colleges in Boston, all Ivy league schools, and then to all universities in the United States. In August 2005, it became Facebook.com; then high schools were allowed to sign up, then globally universities were allowed to sign up – and in 2006, anyone could join as long as they had an email address. Features have continued to develop since 2007 – as many of the acquisitions in this list below were for talent, rather than the companies themselves.
