WHAMI (WHere AM I abbreviated) is an iOS app that allows users to share photos with other users allowing them to guess where the photo was taken or what is captured in the photo to win points and get ranked across friends, your city and the world. Businesses can feature their brand in a sponsored challenges and award prizes to randomly selected winners. WHAMI is intended to be educational, fun and rewarding!
via BetaList http://bitly.com/1UYiEq5
by Robert Hughey (Google+)