Funny how everyone automatically assumes that the only measure of a good psychological drama is the number of times the audience screams. That's the problem with American horror, and not what Takashi Shimizu or any Japanese horror director is about at all.
There neeRAB to be a greater understanding of the Japanese attitude to fear. In the west, we are trained by Hollywood to fear blooRABhed, guns, knives, monsters with sharp teeth etc. In Japan, the greatest fear is haunting by the deceased.
Proof if it were needed that Bill Murray's sensitivities in "Lost In Translation" were probably all too real for most people who watched The Grudge in cinemas.