It's been a pretty big week for weirdly wonderful, mildly disturbing, time sucking apps. Just days after My Idol had everyone we know sliding down stripper poles as animated avatars, Microsoft has released an equally addictive new app called How Old Do I Look, which guesses your age based on whatever photo you choose to upload. If you're lucky, it will say you look 18. Then again, this is an app that put Madonna's age at 27 and Harry Styles at 35. So do with that what you will. Choose your best selfies and try it here.