Facebook is a social networking service originally launched as Facemash in 2003. It became TheFacebook on February 4, 2004, before changing its name to simply Facebook in August 2005. TheFacebook’s membership was initially limited by the founders to Harvard students, but was expanded to other colleges in the Boston area, the Ivy League, and gradually most universities in the United States and Canada, corporations, and by September 2006 to everyone with a valid email address along with an age requirement of being 13 or older. Facebook the company, which also owns Instagram, was rebranded to Meta on October 28, 2021.