Imagine how great it would be if there was one device that instantly translated any language into English and English into any other language. Bluetooth is kind of like that — it's newish technology that lets different devices from different manufacturers (and, in the case of cell phones, different providers) "talk" to each other on a shared wireless platform. For example, Bluetooth makes it possible to use your favorite Microsoft keyboard with an Apple MacBook. You can also transfer files, music or photos from camera to computer or computer to computer or from phone to phone. No more "Can you e-mail that picture?" With Bluetooth phones, you can take a picture and instantly share it with your friends via a shared connection.