I have to disagree with this statement. There are those who simply don't play well with others and then there are those whose presence is a detriment to the whole. While I know some will not agree, I feel that if person X is a detriment to the whole then forum Y is not the place for person X. For your board to be successful, you definitely have to bite your tongue from time to time and put up with people you probably wouldn't want in your own house, but at some point you need to consider the needs of the many. I think that really is what should govern most decisions... are you taking care of your members as a whole... not are you pandering to one person and allowing them to be a nuisance and a troublemaker so you can appear to be "tolerant" and politically correct?
This statement is pretty much the essence of being a forum admin or mod.
There are going to be people you don't care much for that are regulars on your board, and as long as they are constructive and abiding by your rules then there isn't much you can do without looking like you have no regard for your own rules. However when said person does become a problem, you have to nip it and nip it fast before they begin to split your forum members. That is a HUGE problem when it happens that leaves lots of bitter feelings and scars that take a very very long time to mend.
One thing you have to remember also is that your rules are your governance power. If you break your own rules, you make yourself an ineffectual leader/mod/admin at that point. If someone is doing something on another forum you don't care for, then you really can't do much about it unless you have something in your TOS that explains why you would/could. Something like this:
"Members forum accounts are subject to review if members are found to be misrepresenting XXX forum community on the web, in public, or in any situation that may cause an unrecoverable deformation of the XXX forum community."
Thats pretty generalist, but I think you get the point. On the Mercs boards, if we get any bashing of other clubs...we lock it on sight and may/may not issue a warning if it's bad enough. Thank god thats a rarity.
Being a forum admin/mod is probably one of the most difficult jobs. It's an unpaid, sometimes thankless job. It can be really hard to be fair and not let personal feelings get in the way (you really have to learn this, and then make yourself practice it). Then you have to be able to leave your personal problems with people at the logout screen, because when/if your community becomes big enough...you become a genre comminuty organizer and have to be able to work with and for everyone.
Hope that helps your question man. You gotta be fair and honest, always...if you let person feelings get in the way then you can be neither.