Let guests post, but not start threads.
If nasty Guest poster is Mudcat member hiding, add note saying 'Member' to the bottom of their post, and PM them with the warning, 'next time you may be named'.
Delete all rude Guest posts automatically
To do any or all of these things, all clones must sing off the same hymn sheet, and that will not happen while there is effectively only one final arbiter, as inevitably his/her POV will prevail.
Giok