If you have a problem with someone, DO NOT address them in house chat. Send them a private message instead of making it public. Although I haven't seen many "fights" break out lately, I did tonight... and was incredibly shocked. Anything you say in house chat, is fair play for anyone reading it to comment on. If you're going to get upset over other people "butting in," then keep the issue private between you and the person you are angry with, for whatever reason.