PA is slightly different to Blair Witch in that it reminds of those viral emails that went around that prompted the receiver to stare at some innocuous footage for a couple of minutes before a big screaming scary face popped up. What BW shares with PA is irritating, annoying characters. The only redeeming feature in PA is the lead actresses breasts which act more convincingly than she does and are far more obvious than anything the male lead can come up with.
In PA there's some rumbling that indicates "demonic" activity. Then a cup might move on a table. It scared many sensitive Americans judging from the trailer. There's a lot of footage that shows the woman standing watching her partner. Shocking stuff indeed.
The sequel to PA at least weaves the original into it, becoming a prequel/sequel.
In the biggest shock announcement so far this year, PA3 will be out next October
