Personally I think we all need to take a deep breath, count to ten (or one hundred) and remember or maybe adopt the attitude that we are all guests on Stew (the owner's) forum. He has given us and allowed us to use this fantastic site to discuss and share experiences regarding BIR cooking and that being a guest and participating in the forum (if you wish to) is a privilege that he has allowed us and therefore we should show him, his forum and other users respect and behave accordingly.
Friendly ribbing and a bit of banter is good, and I'm all for intelligent debate as it helps members feel part of a community pulling together towards the same goal. I also feel in, my opinion, the key to effective forum moderation is the laissez-faire approach and editing posts or accounts should be used as a last resort.
However, some are under the misapprehension or they have the erroneous belief that they're entitled to unbridled free speech and this often leads to inappropriate behaviour, arguments (not intelligent debates) and can subject other forum users to personal attacks and this needs to be addressed!!! It is disruptive to the other users and distracts from what the main objective is, it's on-line bullying and it's disrespectful to Stew and other users!
We all need to show each other some common courtesy and take other people's feelings into consideration before posting comments that might be hurtful, derogatory, disrespectful, or just blatantly argumentative.
I'm not going to get involved in stating posts as examples as I am not a moderator and might start another heated discussion or be considered antagonistic, but these are some examples what I think qualifies as personal attacks (some might disagree).
Insulting another member
Belittling another member
Ridiculing another member
Derogatory comments to another member
Vulgar, obscene, or otherwise objectionable comments to another member
Questioning in an insincere manner
Deliberately annoying or irritating another member
Just my tuppence worth and the end of it for me.

Regards