This movie is scary. That's the best way to sum it up. I remember the last time I was scared. It was 4 years ago when I saw Ju'on 2 on dvd. This movie scared my wife and I so bad we stayed up the entire night ( we caught the midnight show ). The next day we slighly slept with the tv on. It was a couple days before we got a good nights sleep. I still can't watch the trailer, I tried to watch the new one and it just makes me look around the room . The wife now wraps up fully in the blankets.
In other words its pretty good, but you're warned
I strongly disagree about the statement about watching scary movies. I watch a half dozen scary movies a week. Japanese, European, American, I watch tons. I was scared. There wasn't a non-scared person who walked out of our theater. You could tell by the hushed silence, as people stumbled like zombies to their car.
Also let me say, the similiarities to blair witch or very low. Essentially its docustyle, and thats about as similiar as it is. With blair witch I walked out thinking, wtf, really thats it. With this movie, the scares slowly build up, everytime the camera goes still u get this sense of dread in you, u know that whatever happens is going to be creepier than what happened before. The ending is pretty good, if you can, after you see it, read the wiki of the original two endings. I kept having dreams of all the endings combined together. Creepy