Very good idea. Should filter for those who wish to have sensible conversation, and for those who deserve to be involved in sensible conversation.
Will also give you a horde of ass kissers too, but every cloud has a silver lining... and a **** load of rain ready to come down and ruin your day.
Although if I ever wanted sensible conversation away from 1 to 1 chats, I wouldn't look for it on LOMCN ;o, I know there are mature people... as I keep them on my msn, but the idea is pretty much like sticking a golden dinner table with silk-lined hand-crafted oak seats and a buffet in the middle of a pig's den.