is a nifty and useful tool - I have a TomTom GPS navigation for Christmas that really helped me get around (I get lost easily).
But apparently, there are some really weird GPS tools out there, like this one: the Micro GPS Mail Logger, a GPS tracking device to track your mail as it makes its way through the snail mail system! The device is for "evaluating your delivery service's reliability and efficiency"
The product costs $695.95, which of course, you risk losing every time you use it. Link - Thanks Greg Bryant!