Foursquare is the star social media network of 2010. This is a mobile check-in application game based on location: each time you check in at a place (e.g. a bar or a restaurant), you earn points that you will use to compete with your friends. Moreover you can leave notes about the place, get badges based on your activity and even become mayor of a spot if you have the highest number of check-ins.

Foursquare is also useful for small businesses as it offers details on the people checking in at the place but also enable the owners to offer special offers using the platform. As an example the restaurant Hummus Bro offers a 2-4-1 deal to the mayor of the place. At the moment there are 200,000 users on the platform, a check every second and Foursquare is growing so quickly that Yelp is feeling the threat.