Joe, no matter how much you try, you are never going to stop people replying to things you don't think they should reply to. If you could, you'd at least be able to stop yourself.

People see things differently - one person's 'troll' is another's interesting and thought-provoking post.

People have to believe they're doing something they shouldn't before they want to stop. They might very well know they're doing something they're doing something you don't think they should do, in which case, it's your problem.

If what those people say is somebody else's problem, and that somebody else has no ability or right to stop them saying it, well...it's still somebody else's problem.

All comes down to a control issue, and the frustration borne of trying to control something you can't, whether it's GUESTs posts or anybody else's. If you want to argue, fine, but nothing will change.

If it's somebody else's problem, let them deal with it. If it's your problem, either do something effective or forget about it.