Quote by: Count+Sessine
make a couple more Moderators or "Gods Of Your Speech" and entrust them with the ability to entirely mute players who Just Don't Listen, not only to delete their lines.
Sic, there's a whole escalating range of options open to a mod. There is a mute, and a tempmute, though I've never tried them out... and some even more fearsome weaponry that I don't want to touch. I've only even used the delete-comment button on rare occasions.
Most player behavior problems are best solved by... hm... let's call them parenting