I like idea "b", though maybe it's more of a "flame warning" button: i.e., the authenticity of this article/domain is suspect, so be warned that it may just be

I like idea "b", though maybe it's more of a "flame warning" button: i.e., the authenticity of this article/domain is suspect, so be warned that it may just be flammable material. Really, I don't think we should be necessarily banning content, but rather encouraging the community at large to post worthwhile material for itself.