1. This is not a great movie, but is much better than I expected. It's an innovative take on the tired "found footage" gimmick so popular in horror films today, and is an impressive attempt at a new type of storytelling.
5. The smart thing for the kids to do would be to turn off their computers about 10 minutes into the movie. But of course they won't do that. They can't. Computers and phones are their interface with the world, and they attempt to negotiate the intrusions of the stranger in terms of that reality.
6. In an impressive feat of authenticity, the movie uses real programs like YouTube, Facebook, Instagram, Skype, Google, and even LiveLeak, instead of generic imitations that you usually find in movies.
7. The supernatural aspects of the film are stupid and boring. But I think this movie is just pretending to be a horror film. It's not actually about a spirit looking for revenge. It's about the horrific ramifications that can follow from careless and thoughtless actions.