Guideline: an OpiWiki opinion requires at least one argument or a point of contribution

This is a good idea, but the definition of argument must be incredibly broad. Consciously or not, we don't want to end up censoring users that we don't agree with. Along the lines of the examples mentioned above ("ie "You're stupid!" and other rage-y, name-calling, simple statements), should clearly not be allowed, but that's, I think, about as far as we can go. If there is any doubt whatsoever, it should be allowed.