(8-Sept-09) At first, it was the laptop that was supposed to free us from our cubicles and desktops. They were small and powerful. They were even cool. Too bad they were too cumbersome to unleash the potential of mobile computing. That task fell to the smartphone and the plethora of devices that are following in its wake. The era of mobility computing is now upon us, and the world of business is changing. On the pages that follow we present four examples of how.