May sound a little funny that it's me of all people who's coming with this thread.
Especially on the minstagib servers it happens more and more that the grade of chatmessage spamming becomes beyond all bearing. I know I do a lot of flooding as well, but some new players are really hardcore spamming.
Kickvoting in most cases doesn't work because almost nobody notices the votes.
You can decrease the amount of displayed messages down to 0, but then you pass the valuable messages as well. I couldn't find a way to disable the most annoying thing for me, and this is the message beeps.
Other people than me are even more annoyed by the ingame spammers and prefer not to play public anymore.
Any ideas to handle that? What can we do about it?