Facebook filled for IPO yesterday. We are not going to bore you with the technical information about it, as those are mostly of interest to banks and their corporate clients at this point, but the documents submitted mention a few quite interesting facts about the social network.

Obviously, the network still has not reached saturation point as its user base keeps growing. By the end of last year Facebook had 845 million users, who formed 100 billion friendships, uploaded 250 million photos per day and generated 2.7 billion daily likes.