Ah I see... Opening a box of crap in turn opens a can of worms!

I'd not come across this activity before and the first few things that struck me were 1. The boxes were well away from the main sites and were tucked into natural hollows, but converesly 2. The locations were pretty obvious in both cases because of the accumulation of litter and detritus which really did concern me. I was interested in finding out if these apparently benign deposits were the exception or the rule, or do some go as far as actually disturbing the sites. I read on a geocaching website someone complaining that the geocache was very hard to find as it had been placed behind a loose stone in the walls of a ruined abbey and alarm bells started going off.

I think I get the thrust of the main arguments for/against now so feel free to drop this at your leisure ;)