1. It's simultaneously a lot more expensive and a lot cheaper.
2. Clever and impressive. Slow-paced scary. Does not disappoint.
3. For those able to roll with its slow-burn suggestiveness, this superior installment inspires a not-especially-pleasant, Pavlovian level of twitch response that few horror franchises can muster.
4. You have to have seen the first one in order to make any sense out of this one. For those who haven't it is a muddled mess
5. Once again, somebody is being haunted by a demon, and once again the demon seems less like the Prince of Darkness than the King of the Whoopee Cushion.
6. Less scary than a toaster.
7. Even knowing what's likely to come -- the doors opening on their own, the skeptical characters scoffing at metaphysical explanations, the unheeded warnings from paranormally gifted guests -- doesn't make it any less nailbiting to watch.
8. In classic fashion, Paranormal Activity 2 repeats its predecessor on a slightly bigger scale to considerably lesser effect.
9. Just when we're ready to write the whole thing off as a waste of time, Paranormal Activity 2 steps up to deliver a quietly brilliant ninth inning save.
10. can't quite evoke the escalating dread and moments of sheer terror that Peli orchestrated so maliciously in the original film, but it still delivers more than its share of tension and scares

What is a brief summary of the following reviews?
Paranormal Activity 2 doesn't cover any new ground, but its premise is still scary -- and in some respects, it's a better film than the original.