You can't get rid of it! (Spoilers)
Spoiler alert:
The theory is that you can rid yourself of the curse by passing it to someone else. But, everyone that passed it along was still cursed!
Hugh passed it to Jay and was still being followed.
Jay passed it to Greg and was still being followed.
Greg presumably passed it to the girl he had his arm around at the lunch table and died anyway.
Jay presumably passed it again to the guys on the boat, didn't work again.
Jay passed it again to Paul and what happened? She was still followed.
Paul passed it on to a hooker and was still followed.
PASSING IT ON DOESN'T GIVE IT AWAY! Am I the only one who caught this?