For a more up to date version go to: https://www.listchallenges.com/the-top-1000-horror-movies-of-all-time-on-rate
Up to date as of April 25th, 2018. Rate Your Music (RYM) is a site dedicated to all music and film works. It is in the stage of changing to a network of sites covering music, film and video games: Sonemic, Cinemos & Glitchwave.
Genres on RYM on decided based on user votes, which leads to some films commercially branded as horror to be tagged as something else (often thriller) instead. Likewise, a few films may have got in here that weren't marketed as horror movies.