foursquare
The foursquare platform makes it possible to learn a lot about the city in which you are located, and even arrange a spontaneous meeting with friends. By checking into any institution through foursquare, you will notify your friends about it, including through social networks Twitter and Facebook. Also, thanks to the marks, you can get a good discount from the owner of the institution, earn badges and points, and even become the titled “mayor” of any organization, institution or institution, if you visit them often enough.