Funny reading all of this.... I have, in the past, scoured for firewood. I have, in the past scoured empty campsites to see if anything was left behind. I have in the past also forgot and did leave something myself, to return, and find it now gone, or the campsite occupied by another camper. In which case, I conceded ... it was my bad mistake ... get over it, the item is gone!
When the campground empties out Sunday at noon, and it is now Tuesday morning and the campsites have not been occupied, and you find something there... is that still "theft?"
How about when you go to occupy the campsite you have previously reserved, and you discover something was left by the previous occupant? What do you do then? ... let's see ... a pair of pliers, a pair of scissors, a kids walkie-talking (only one though, not both), bungie cords, springs that hold those carpet mats to your camper steps, ... oh ... how about all those cigarrette butts thrown on the ground!
What do you do with all of that? Theft!
How about if you find something laying on the side of the road and you pick it up and take it? (Which I do quite often)... screw drivers, hammers, electric cords, rope, all sorts of stuff. Who do you give it back to? Theft? come-on ... get real!
Now, to blatantly go into some's camp and take something ... now that is a different matter... I 100% agree there! Use common sense folks. come-on!