Cool article. I find that GPS is best-used as merely an aid or convenience--it is in no way a substitute for knowing a place. I think it has produced a generation who don't know how to get around. I'm guilty of this in the city. I always use a GPS when I rarely travel to the city, and as a consequence, everything seems confusing. If I lose the GPS signal among the skyscrapers, I feel lost.
Especially in the backcountry, you should study the layout of the land way ahead of time and have a map and compass handy...GPS should only be used as a quick reference and to track distance and elevation gain. You should ask yourself, "If this GPS dies right now, can I still find my way? Can I find my way back?" If the answer is no, you should rethink why you are there (at the least, stay on trail).