Yet Foursquare hasn’t broken through to the masses, and it has just a fraction of Yelp’s 138 million monthly users. The check-in feature that Foursquare’s best known for has obscured its useful recommendations engine, so the company had to make a change. In early May, Foursquare offloaded check-ins to a new standalone app, Swarm, and rebranded around a new vision for intelligent, personal recommendations. To beat Yelp and Google, however, Foursquare’s going to have to do more than educate the masses about the virtues of its technology.