Here's a geocaching post from Hedge's Ramblinz. Even though it is a poignant article, I just had to put the link here because of the photo. While on his site, look around a bit. Some pretty clever writing!
Making the world a better place - one cache at a time.
Geocaching is a global game of hide-and-seek for global positioning system (gps) users. Participants hide geocaches and then others, using global positioning satellites, seek out the hidden caches. In addition, players move traceable items from cache to cache all over the world. Follow the GeoCats as they cache their way through life.