I reject your premise that any such codes are required for a public internet forum.tcmtech,
What would your code of ethics or code of conduct be for a forum such as AAC?
The owner/operators of the forum may impose whatever code they like, but the choice is entirely at their whim, and there's no reason (except their own) to follow some higher source. For instance they could choose to reject all posts without nude photos attached. Some would cheer, some would boo, some would stay and some would leave. Nobody would much care.
All we members want is a clear statement of the rules. It's annoying to invest time and effort into a thread or project only to have the rug pulled out from under it in the name of some foggy, self-imposed rule.
Members understand there will be unavoidably grey areas, and that Mods will have to make the calls, and like referees they will not always make perfect calls. But the rule itself should be clear.