Sorry to barge in, but this has caught my attention. The Bible tells us that in death we go to sleep until Christ returns. Scripture is also clear that demons play a very real part in this world, possessing the living and wandering the earth. If the dead sleep, then the spirits people associate with the ghosts of ones who have passed are in fact demons who have taken their forms. Ghost stories are a trick of the devil to hide demon encounters. "And when they say to you, “Inquire of the mediums and the necromancers who chirp and mutter,” should not a people inquire of their God? Should they inquire of the dead on behalf of the living?" Isaiah 8:19
Necromancy is defined as the practice of communicating with the dead. For man to encourage, participate in or condone ghost activity, I think, is wrong.
"Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth:" Exodus 20:4