Thread:User talk:Armondikov/Side boxes

So I have a question you may or may not know. Is there anyway to override the addition of a category to a sidebar? That is, I'd love to add "atheist sidebar" to some of the articles, like well known atheists, but would rather not have the "atheist" category flooded with individual articles that better fit into sub categories. (Similar to what I did with 'religion', keep only the really juicy stuff populating the sidebar from the main cat, and the other stuff in proper subcats only).