Aright, so heres the thing.
I am a huge movie buff, and I believe that horror films are just money making schemes that movie companies put out. Teens love them. Most horror films consist of CHEAP scares: Really loud noises that make you jump. And really gory stuff. There have only been a few horror films that are genuinely scary. One is the original "Exorcist" where the images are truly disturbing, and creepy. The other is this film, "Paranormal Activity".
Heres the point. Everyone who says that this movie is NOT scary, either didn't have an open mind going in to it, or is a Non-Conforming wannabe. You know those people that say they didn't like something that everyone else liked, just to look cool, and brave? Yeah, well this movie brings out a lot of that.
If you have a good imagination, this movie will get you.
If you believe in ghosts, this movie will get you.
If you love Horror films, Then you will love this movie.
These horror films come once every ten years, so stop being a hater, and enjoy this film.