networks, it does not require users to create a new login, and also users can see their friends in Centrl immediately, without adding them one by one. Centrl also has partnerships with Navteq (part of Nokia), Citysearch and Valassis to bring location-based coupons to its users. Through layers, Centrl provides its users access any data source from the web, such as Cityserach, Yelp, Wikipedia, Oodle, Qype, etc. Users can also see the most interacted-with layer items in their area, so they can always keep up with what is going on around them and never miss anything important. They can also see what their friends have been doing and the most popular layer items in their friend network.