Foursquare is a location-based social networking platform that allows users to "check in" to locations using their mobile devices. It has experienced 150% growth compared to Facebook's 27% growth. Users can connect with friends, gain badges and rewards for frequent check-ins, and the most frequent visitor to a location can become its "mayor". Both younger and older users are adopting the platform, and small businesses are also using it. Advertisers can benefit by creating closer relationships with consumers and providing instant gratification through targeted offers. Some privacy and security concerns exist around location sharing on the app and through connections to other social media.

1. Foursquare