Here’s a cool way to use Google earth as GPS. Too bad you can’t run it on a PDA unless someone finds a way…
Basically you run Google Earth and use some great donation-ware to link it in real time to a GPS. This means that your mapping software and maps worldwide are not only free, but you also get hi-res satellite views and in some cases 3D buildings (in downtown areas). Only a year or so ago this would have cost tens of thousands of dollars in proprietary GPS mapping gear; it would be difficult to share it once done; each map and
