Is there a hack, that will not allow users to post in all caps?

[neocorteqz]

as you know posting in all caps is rather rude. So i was wondering, is there a hack out there that will automatically edit a users post if it's in all caps? that way a mod or admin doesn't have to continue to edit post every time it happens.

Or is there a way I can set the forum (all forums and sub forums) to not allow all caps at all.

Thanks.