Facemash, the Facebook’s predecessor, opened on October 28, 2003. Initially, the website was invented by a Harvard student, Mark Zuckerberg, and three of his classmates – Andrew McCollum, Chris Hughes and Dustin Moskovitz. Zuckerberg wrote the software for the Facemash website when he was in his second year of college. The website was set up as a type of “hot or not” game for Harvard students. The website allowed visitors to compare two student pictures side-by-side and let them decide who was hot or not.