On Mon, 22 Nov 2010 13:04:40 -0500, HarryK wrote:

Not much one can do in an unmoderated group *except* not respond to the
troublemakers.

One of the things we can all do is set a good example and not start OT
discussions in the first place. Once they are started they take on a
life of their own and keep people hanging around that really should be
elsewhere.