Promoting horror movies in the modern age

I don't know if the CARRIE remake will be good or not.. But the marketing for the movie surely is.. This amazing video was a hidden camera advertisement taken in a coffee shop in NYC without people knowing it.. Though I most likely would have been as alarmed by them at the CARRIE-like power this coffee patron had, I think it's amazing that they thought of this..

CARRIE MARKETING, 101.. This method should be taught in schools across the world: