Gamification might become a big thing. Or it vanishes just like the Tamagotchi did. The concept is pretty simple: You award people some minor badges or rewards for things you want them to do. Foursquare works this way by giving away points for visiting spaces.
Since I am working in a workplace consultancy I think about gamification to make the workplace more efficient and foster the utilisation of spaces in the office. Second Lunch provides some great badges you can strive for. My favourite is the Mad Men Badge.