Boo! Your Listing is Haunted!

I expected the article to say that ghosts in the house would decrease the value of the house, possibly cause the broker to disclose this "defect". What I didn't expect was that, in some cases, haunted houses are a good thing? Good or bad, folks, this is something you need to disclose. Question is, when does this "factor", good or bad, cross the line from fairy tale to real. Happy Halloween!