I haven't seen Skinamarink but Frozen Flesh was unwatchable. Not a big fan of the Paranormal Activity series but IMO 3 was the best of the bunch easily, it's basically a prequel to the first 2 so watching out of order isn't a problem.

Seems to be a love it or hate it type of film. I saw it was made for only $15,000 and took in over 2 million at the Box Office. Hollywood wishes they could bring in those type returns.