One fix might be to implement something like Facepunch Studio's forum system. You're auto-banned for a day if you don't capitalize your thread titles and banned by moderators if you shout in ALL CAPS or misspell words.
But that's solving a problem we don't have yet? I think this particular uproar is the liveliest discussion we've had on news.yc and even this isn't terribly exciting.
Here's their ban list: http://forums.facepunchstudios.com/showbans.php?