A Redditor edited the levels of a P.T. screenshot. Absolutely frightening, and presumably soon to be circulated on Facebook as a photograph of a real ghost.
Speaking of the demo, this gallery features 26 high-res screenshots, including this one giving a better idea of how the hallway and ghost look during gameplay:
You are now looking at Screenburn, a Kotaku blog dedicated to the best gaming images, videos and GIFs online.