As I don't believe in fancies of the imagination, my only thing to fall back on is logic. This is how I KNOW there are no gods, this is how I KNOW there are no ghosts, vampires or anything else in that cast.
You've got to ask yourself if it's reasonable to believe that ghosts could exist. We are animals, just like the elephant that is intelligent enough to realise death... if elephants do then so too do other animals. They understand death, and will even mourn... with this being the case, how many animals would you consider have died in horrible circumstances? How many animal ghosts have been seen?
CTG and eastlos, is there any chance of you backing up your vote?