Facebook was founded in 2004 by Mark Zuckerberg, Eduardo Saverin, Dustin Moskovitz, and Chris Hughes at Harvard University. The original name of Facebook itself was TheFacebook. It was originally limited to only Harvard student. It then expanded to other post-secondary schools in the area and then to the world wide web. Facebook is a photo sharing platform that expands on text communication through captions and keeping its users connected. It is the largest social media app ever created. It has 2.5 billion active users.