At a tradeshow in Chicago this week a social media app surfaced in what refreshingly different fashion?

Answer: A Pepsi vending machine. According to InformationWeek,  PepsiCo's "Social Vending System ... allows beverage buyers to purchase drinks as gifts and to offer them to friends, or anyone else, in the form of redeemable codes delivered via text messages. The buyer simply enters the recipient's name, mobile number, a personal message, and an optional video message, and then sends the gift code into the ether. The recipient can then obtain the paid-for beverage at his or her convenience."