Of course, one would hope that a mad rush to report everyone wouldn't occur. It should be a last resort sort of thing, for someone that's just making the arena a bad place to be.
The screen shot Daddog is showing has a nifty feature up a couple lines. Squelch them, it's too easy.
Alot of people forget that the ones who constantly disrupt the arena are attention starved, and any attention, even the notice of the moderators and outcry from the arena is Good attention. Getting chat suspended is more of a trophy than a penalty.
The one thing they Can't stand is being ignored, so if you Really want to get back at them, don't give the the audience they so desperately crave.