Hype backlash will kill Paranormal Activity, listening to the post-movie chatter made this evident. This really should have been a straight to DVD movie. If you come into it believing the commercials, you will be sorely disappointed.
The movie cues the audience with low rumbling noises(even during the daytime), which creates suspense but doesn't go with the premise. The acting is not very good especially with the boyfriend micah. Micah seems not too affected by the by all the strange happenings. The ending could be the worst part of the movie, which comes as no suprise when I found out it was studio "Inspired".
All in all I would pass on this one, watch [REC] instead. 5/10