My take on this whole matter:
First of all, I am no fan of rules/restrictions or "guidelines" in any way, especially not in social contexts, so if there ever is any list made from this I'll probably stick to using my own common sense anyway, simply because I believe that different circumstances require different approaches. I like most of the silly I like that this forum can be both the light-hearted and serious side by side, it is in fact one of the main reasons I stayed here. So if this eventually turns into any form of "do things like this" (which I know is not the purpose at the moment), it will loose my support. Just to be clear.
However, I do not enjoy the thought of so many of the people who got me to interested in this forum not feeling at home here any more. And I don't like the thought of all the silliness alienating others. And while I do understand the concern that threads like this might only increase the "division" between parts, I definitely think that it must at least be discussed. I don't think trying to ignore it will lead anywhere but to passive-aggressiveness and "social festering". I have enough of that in my own family, and I don't want it to spread to my "online family" (because yeah, I might not be a high profile on these forum, but I do consider this an "online home" of sorts. Basically, there's a reason this is one of the only two forums I visit regularly).
So, to be concise, I think at least talking about it is a necessity, even if it results in nothing or next to nothing. I want to hear what people from both "sides" (as I said before, I'm still not sure if there really are different "sides" to this) have to say on the matter, as I really don't think shutting anyone out from the discussion will accomplish anything. Both what people consider this "shit talking" to be, and what previously self confessed "shit talkers" (I really do dislike that term) have to say on the matter. At the very least, I hope this thread will bring a little more understanding and respect between users.
pseudo-edit: The thread has drifted a little since I started writing this, but yeah, such is life.