Bluetooth - its name is cool, but what can you really do with it? If you're curious, let Michael Yuan take you on a tour through the myriad use cases for Bluetooth-enabled devices, from car kits to social networking. He also provides overviews on the technology behind Bluetooth, and how to use it. If you're considering Bluetooth, either for app development or to create your own cable-free personal area network, this is a good place to start.