http://idontthinkitsgoingtorain.com/News/loopt-ventures-into-yelp%E2%80%99s-territory-with-new-local-reviews-site/ Before there was Gowalla. or Foursquare, there was location-based social network Loopt. Launched. in 2006, Loopt was one of the pioneers of the location-based. mobile social network. And Loopt has gained a huge number of users of its mobile apps; the social network currently has 3 million mobile users, 1 million of which are on the iPhone. Compared to Foursquare and Gowalla, which have 150,000 an... Fri, 18 Dec 2009 11:35:15 CST en