Google have done it again. While I was working on a game on top of a mapping service myself they were just quicker - again. I assume we will see a lot of gamification aproaches for digital services in 2012. Especially for those where the usual dwell time is limited until you have got what you where looking for. Imagine for example Groupon or Amazon would reward you for looking through all their offers. Or iTunes would reward you in a non-monetary currency for trying out new artist. Foursquare gives you badges for check-in so ask yourself which things would you like to score while using a service.