One of the most salient aspects of the rise of apps to date has been their ability to apply to a smartphone into everything from a physical trainer to a menu planner to a social networking tool. And an "Angry Birds" game player. That trend will continue. "Mobile app developers will 'appify' just about every interaction you can think of in your physical and digital worlds," notes Scott Ellison, VP, of mobile and wireless research at IDC. Read more here.