Why do you look at your friends' Facebook photos? Many people do it for the same reason: to see if they're in any of the pictures. That's not the only reason—of course you want to see what your cousin had for breakfast—but everyone gets the same rush when their face shows up on someone else's "Photos" page. There may have been hundreds of people at the party you went to on Friday, but when you're front and center in one of the pictures, you're more than another attendee. You are recognized.