Dang, this page gave me the heebie-jeebies. :-/ Is anyone here well-versed enough in horror tropes to explain to me what makes this kind of ghost depiction so unnerving?
I imagine the lack of defined facial features makes it all the more unnerving. Kind of an uncanny valley thing where it looks just enough human to make you see the resemblance but far enough away for you to know it's not and that something is very wrong. Some theorize the uncanny valley is an instinctual disgust for corpses; i.e. it looks like a living person, but its not and its dangerous to be near it so we respond with "EW!! GROSS!! GET IT AWAY!!"