On the show: Stay within walking distance to your meetings with Walkscore; Nike uses 3D holographs to sell shoes in Amsterdam; Paying by sound in Beijing; K-Mart uses checkins to promote the world's largest bake sale; Asif's retail RAMP summary; Accenture's "Seamless Retail Study." Plus Rob's app fascination of the week is Tempo and special guest Raj Singh, founder of Tempo talks the calendar as the operating system.