Just when you thought your brand presence on Facebook and Twitter was enough, here comes a new form of social-media fandom: the group texting community. Apps from BrightKite, textPlus and Fast Society, among others, turn your texting function into a chat room. While such groups are often short-lived (to plan for a party, for instance), the Dairy Queen group, "DQFans on textPlus," is apparently in it for the long haul. According to this interview, the group was created by a "proud Canadian" teen named Kenda. A Dairy Queen rep confirmed that the company had no idea it was breaking new ground in mobile social media.