Something I keep noticing. Have you noticed that when doors open and chairs get pulled, they're moving very... anitimatedly. (I can't think of a word for it)
It's almost like they're getting pulled by some string.
And the second video, that door could've just as easily been opened from the other side. Do you notice how the camera was at an angle where it couldn't see the other side of the door?
The only one that gets me, is the girl in the room. And also the demon girl in the mirror. Other than that, I believe most of it is staged.
The car one where the ghost was walking across the street? It turns out that there was a small crack in the window, and the people filming just turned the camera, moving the crack 'across the street' to pose the image of the ghost.
I'll email this to my friend, and ask his oppinion on it.