As has already been pointed out, this isn't something that can be clearly defined and agreed on by everyone using the site. The rules, I think, are a pretty good consensus of what people want in this context (which obviously leads on to the process of removing them through moderation), but others may want to broaden them or include others, and I don't think there is anything necessarily wrong with wanting to be able to do that. blah... blah... blah... ignore button.