Reviving a once-hot app is tricky. Foursquare, the darling of mobile check-ins, is hoping to lure new users in the old-fashioned way: with ads.
Erin Griffith, Entrepreneur
Tue, 10/21/2014 - 10:45am
Reviving a once-hot app is tricky. Foursquare, the darling of mobile check-ins, is hoping to lure new users in the old-fashioned way: with ads.