I've asked so many questions about this. The whole topic creeps me out.
From a Christian's point of view, there is a Heaven, He||, and for those who believe in it, Purgatory. (I think I spelled it right) I believe in ghosts, spirits, or whatever else you want to call them, but I'm not sure of what they ARE. Children are innocent right? So how come there are so many spirits of children around?
Like that area around Dallas (Tx) where the bus load of kids were hit and killed by a train crashing into them on their way to school. I've seen it done, now you can go to the exact railroad track, sprinkle some powder on the back of your vehicle, sit in your vehicle, and pretty soon you'll be moving, even with the car turned off. You get out the car and examine the back of it. You'll freak, because little handprints will be imprinted on the back of your car.
I know they're there, but what are they? Certainly they aren't your imagination, you can't just think up an image of someone who really existed years ago. Is it Satan playing tricks on your feeble mind? Whatever the case, I'm not sure. Just wanted to share that.