Awesome movie. If you aren't into thinking about what's going on then you won't like it. The director would do shit like just have a still shot of a dark backyard in a rainstorm, sometimes for a long period of time. It built tension for me and I thought the concept was somewhat original, it seemed to be a metaphor for a n STD as well.
I thought it was 8/10. The critics rated it 95$ and the fans 66% or something similar, it's a bit of a FILM rather then a movie.