Foursquare's newest location-based advertising platform seems a likely reason according to your themes. http://blogs.wsj.com/cmo/2015/04/14/foursquare-launches

Foursquare's newest location-based advertising platform seems a likely reason according to your themes. http://blogs.wsj.com/cmo/2015/04/14/foursquare-launches-new-location-based-ad-offering/ http://blogs.wsj.com/cmo/2015/04/14/foursquare-launches-new-...