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Auto4Sq : How to Automatically Checkin Foursquare
Foursquare's New Swarm App
Foursquare's big break: from check-in app to Yelp killer
Foursquare: the startup zombie that still eats your data
SWARM APP BY FOURSQUARE
CNET Update - Foursquare Swarm spinoff puts focus on friends
Foursquare checkin
Beautiful animations in Swarm app (Foursquare)