also, those are honestly some of the strangest-looking people i've seen. i half-thought that, at the end, it was going to turn out to be a study in weird-looking people and it was pretending to assess the fake smile thing.
I don't think the vampire woman is indeed a woman.
I selected whether the smile was fake or not before watching the animation (I'm on 3.3k/sec it wasn't difficult ) and scored a 13 out of 20. Not sure that helps their survey any.