ry nonvoice informa- tion, currently including short message service (SMS), multimedia message service (MMS), Wireless Application Protocol (WAP) (which is a protocol for mobile Internet access), JAVA, and binary runtime environment for wireless (BREW, a programming platform for CDMA system). The latter refers to the contents or applications that customers can enjoy based on the services, including ringtones, news, pictures, games, video and music downloading, location-based services (LBSs), email, stocks, banking, and SO on. For example, SMS provides a point-to-point communication method as well as contents like weather forecasting, greetings, jokes, ads, and text-based games. Therefore, the classification will be confused if we regard platforms and applications as the same level. Currently, the technological platforms are available and deployed in all the three countries. But the diversity of contents and applications provided based on them varies across countries. The walled-garden strategies of U.S. MNOs and low interest of customers made the applications limited. Although the U.S. MNOs have begun selectively to allow third-party CPs to market content directly to their sub- scribers, it is estimated that about three-quarters of all U.S. mobile content sales were still going through the operators' branded portals, or storefronts, in late 2006 [4]. The lack of contents and applications weaken the capabilities of some services. The SMS and MMS are just positioned as point-to-point communication methods instead of contents/applications carriers. In contrast, in China, thanks to the keystone strategy of MNOs, thousands of VAS providers and CPs are developing and providing over 100,000 products of contents and applications through mobile networks [5,6]. These services set up close relations with many other businesses including media, entertainment, educa- tion, publication, travel, retailing, finance, banking, security, medical service, and SO on, and changed both business models and lives of people greatly. For ex