This movie kept me wondering what was going to happen next. I liked how a lot of the movie was interaction through computers, phones, technology, etc. I haven't seen something like that done before. I enjoyed this movie a lot.

I really liked the suspense in this movie. It had a great cast and phenomenal story line. I however am not a fan of the computer viewpoint at all. Overall it was a good movie.

Great thriller, uses the central premise in some clever ways.

Very exciting,! Good ending.