A few weeks ago I bought a GPS device, and I’ve been using it for running. I can plot my routes on Google Maps and Google Earth and analyze my performance. I eventually have plans to use the GPS while I ski to keep track of how many runs I ski, which lifts I ride, how fast I go, how long I wait in lift lines, etc. My goal is to be able to sell my results/analysis back to ski areas in exchange for free lift tickets!