Riya

Riya is a photo sharing site which also does face and text recognition. The neat thing about it is, once it is trained, it can recognize and tag people in photos. A friend of mine works there so I recently went to one of their launch parties and even more recently got in on their alpha. It's pretty fun to see it pick out the faces in the photos, though I haven't uploaded enough pictures to really train the system yet. I'll upload some pictures this week and play around with it more.