RSI
Actually, the "contortions" you see people using on multi-touch interfaces are what prevents RSI, rather than what creates it. The main reason to get one of these is because your hands can run free rather than being held into the one position on the mouse.
Agreed that Bluetooth and batteries on a device that doesn't move is silly, but since working out the gestures I prefer to use my macbook's trackpad to my mouse even when it's attached - I could see this being a great setup if you used an external keyboard and monitor setup.
Biting the hand that feeds IT
