I have to say I agree with some of the above and disagree with other bits, but I think that  has it right.  Placing this article into a category inherently does just that, it categorizes it into a topic heading.  But adding a navigational template at the very bottom is not characterizing anything, it is simply a tool for other editors, in other words, if your interest has been piqued after reading this article, then here are some others that might interest you.  So I'm going with no on Category:Cult related books, and yes on .   .