1) Mark Zuckerberg founded Facebook in 2004 while attending Harvard University after creating a similar website called Facemash that compared student photos. 2) Facebook has grown tremendously over the years, reaching over 50 million active users by 2007 and becoming the 6th most visited site in the US. 3) To create a Facebook profile, users need a computer, internet connection, and a valid email address. They can then customize privacy settings and connect with friends.