mapquest has sent me on some wild goose chases. have had good luck with good gps's.
downed a Elk one year and had a buddy with a helo that said to call if i did. took a waypoint, texted him the CO's and he flew straight to us. only way to pack elk!
GPS is awesome. I trust mine, but that doesn't mean I don't carry a map and compass and know ways to find coordinates in the area's I hunt. My GPS has never let me down and I seriously doubt it ever will. I also believe the OP is talking about car GPS systems. I remember one winter driving up to my shooting pit and coming up on a semi stuck in the snow. He said he was following the GPS directions and it led him to this road which was a non maintained road that is eventually closed to vehicles over 48" wide in the winter. The biotch of using a car GPS is it looks for the shortest route and sometimes that shortest route is not possible....