Repetitive stress injuries. It's a problem that plagues the technological world. One of the newest diagnoses? iPod thumb. "Some users of Apple's iPod music player have also complained about the intensive thumb movement, according to leading British-based online IT magazine." The experts give simple advice. If it hurts, they say, stop. It's easy to laugh at and overlook these injuries so long as they happen to someone else. Up close and personal is another matter. TUAW readers, please take care of yourselves and watch for the warning signs of oncoming RSI issues: tingling, stiffness and pain.