> In attempt to placate frustrated users, Foursquare launched "Swarm," a separate check-in app with minimal features, removing most of what made the original Foursquare app great. "
This sentence is provably incorrect. FourSquare launched Swarm before their pivot, there were no 'frustrated users' at that time because their main app still did checkins. The article makes it sound like FourSquare were reacting to pissed of customers. They weren't - they foresee people who liked checkins and always accommodated them.
Not a frequent 4sq user but for me the app is more relevant now - it pops up useful nearby stuff that I might like as I wander around London, so far its suggestions are pretty good.