Launched on February 4, 2004, by Mark Zuckerberg, along with fellow Harvard College students and roommates, Facebook is an American online social media and social networking service company based in Menlo Park, California. Its mission is to give people the power to build their own community and bring the world closer together. People mainly use Facebook to stay connected with friends and family, to discover and stay up to date with what’s going on in the world, and to share and express what matters to them. Today, Facebook has more than 2.2 billion monthly active users.