OK, so the Super Swarm badge is a super toughie to unlock. Like the Swarm badge, you need to be checked in at the same location as a number of other prople at the same time. Whereas the Swarm badge needed fifty people, the Super Swarm needs you to be checked in with 249 other Foursquare users. If you want this you better start hanging out at some social media conventions.  This badge was created at the SxSW (South by South West) 2010 convention and when you unlock it you get the message: "Know what you call a 50 person swarm at SXSW? The Hilton Lobby. So we upped the ante to 250 and you still nailed it. Well played!"