Not sure if any of you have already seen this site, but I found it quite amusing. It uses facial recognition to guess how old you are, all you need to do is upload a photo; http://how-old.net I tried two photos - the first was taken about six years ago when I was morbidly obese. The site guessed my age at 36, when in fact I was 24. The other phone I tried was taken this morning, and the site guessed my age at 25. Apparently, being overweight really does age you artificially.
did this a few days ago. It guessed my age bang on at 32 with an id spec selfie. 'Myspace' angle selfies guess my age at 26. The real fun is trying to hit the really high figures, with a little bit of gurning I managed 76.