Mods imo have one main purpose, to get rid of obvious trolls. I really don't mind if two (or more) posters are having it out and are totally insulting each other, it doesn't detract from whatever it is I am going to a forum for and sometimes it is funny and entertaining. They only run the risk of simply being boring twats, in which case I will read around them.
I have had threads shut down because boners were attacking me, but I was handling it just fine without mod interference as I am sure anyone else could handle it... just like they could simply ignore it, which is just something I don't need a mod to help me do, do you?
What is the real difference between if a thread gets locked or just buried as people lose interest?
There could even be a "Boxing Ring" section where if two posters just can't get along they can go there and just wail on each others packages until the cows come home. I know I would go to that section for a fun read once in a while. I think the people who don't get along on forums sometimes would get along fine if they met in person so I don't put alot of stock in an internet word match and I don't think most people do... so when a mod steps in and locks a thread because people are spatting I just think it's wierd, silly, and tiresome.
Also, swearing. I think everyone here knows all the dirty words and people just find other ways to type them anyway. I can't believe I can't type p^n^s here. I never got the logic of blocking cursing when you can go straight from this page to two turds one hole with no problem.