It also uses this ability to learn about the kinds of places a user likes, based on when and how often they visit different venues.
It then uses this data to improve a user's recommendations, and to gauge the popularity of a venue.
As of December 2013, Foursquare reported 45 million registered users, though many of these will not be active users.
Google bought Dodgeball in 2005 and shut it down in 2009, replacing it with Google Latitude.
Dodgeball user interactions were based on SMS technology, rather than an application.
Foursquare uses natural language processing to match a user's tastes with the tips at nearby venues that mention them.
It is then able to recommend nearby places to the user that match their tastes.
Foursquare 8.0 uses its own proprietary technology called Pilgrim to detect a user's location.