So why not just have an OT and make it part of the header that religious or political subjects will not be discussed? If such a subject arises, that is the one that is moved into the private forum? It sounds as though you are trying to throw the baby out with the bathwater. Even people in museums talk about other things than just the art on the wall.

BTW Stacey, while it is an art community, art is derived from all sorts of subjects and so being as such, art is related to just about everything. You can't really expect artists to have no opinions or no discussion of any other subject than art. If you limit speech in the forums, you'll wind up with it in the galleries and that will not go well...

Just a thought...