I believe I have just had a brilliant idea:
Sometimes in a BC thread, two members will get themselves into a verbal tussle (which may or may not be directly related to the thread topic) whilst others attempt to continue the thread around them.
Instead of deleting the ever more acrimonious posts, perhaps the mods could move the content to The Local's 'car park', where the pugnacious posters can indulge in as much flaming and willy-waggling as they wish. Other members would have the option of ignoring them and concentrating on the original thread, or forming a virtual circle around the contestants and egging them on to greater verbal violence.
Well it seemed like a brilliant idea when I first thought of it...