Foursquare's Swarm now lets you buy stuff with its digital currency

Back in August, the gamified check-in app Swarm started offering users coins — digital coins — whenever they used the app to check in. At the time, the system was a bit confusing; the app introduced coins, but failed to give users a way to spend them. Now that’s changed. Starting today, the Foursquare-run service lets you spend coins on sticker […]