http://www.techwench.com/6-great-ios-4-apps-that-take-full-advantage-of-the-multitasking-feature/
Apple has updated their iPhone and iPad devices with a new operating system, which has a lot of bug fixes, improvements and new features, the most important of which is the multitasking capability. The multitasking on the iOS 4 is quite different from your usual desktop multitasking and the way Windows Mobile handles it. WM has “true” multitasking, where the user can run multiple programs at the same time, and the OS spreads the resources between them in an optimal manner.