I was alerted to this article by a fellow reader of one of my favorite message boards. I don't really blame folks for being suspicious of someone skulking around a bridge, trying to place a mysterious object on it without being spotted (holding a GPS, to boot). I'm actually surprised that I haven't been questioned at airport security, considering the last several air trips I've made, I've had three GPS units in my carry-on.
I just hope no one decides that geocaching ought to be banned. I also hope that the example in the linked article shows people that there can be a logical explanation for all sorts of "suspicious" behavior and that we ought not to jump to conclusions.