The huge number of adopters of these devices and of the related services indicates a growing mass audience for mobile electronic communication and promotion, an emerging mobile lifestyle, a popular channel for delivering mobile electronic services, and a mass market for executing mobile transactions. Communication to this audience can be delivered in the form of text, audio, or video. Consumers cannot only receive information from firms but also initiate interactions, actively sending requests or information to firms.2 To reflect these characteristics, we adopt Shankar and Balasubramanian's (2009) definition of mobile marketing as “the two-way or multi-way communication and promotion of an offer between a firm and its customers using a mobile medium, device or technology.”