Foursquare's updated iPhone app takes on Yelp, adds hidden turbo check-in feature
Foursquare's newly updated iPhone app signals a change for the location-based social networking service that will help better position it against Yelp, and also debuts a handy hidden feature that allows power users to check in to locations more quickly.
http://feeds.appleinsider.com/click.phdo?i=38822d7ce4bdbc76509f5b262a29f945
