Hell is Other People - optimal locations to help you avoid your foursquare friends
a multitouch application to explore your personal movement profile and to show other people engaging places by adding photos and comments with the help of your smartphone. It can be seen as a rating system that offers people the possibility to discover new spots in an unknown surrounding e.g. during a city-visit. Although a smartphone is not necessary to interact with the system, it offers you the possibility to give insights to your movements through the city and lets you compare your mental map with the reality.
smartphone app that pulls up Wikipedia articles based on your location