I think "shocking" is a perfectly acceptable tag or label - which Imprint could definitely be relegated to as well as other extreme outings. I would of course also consider it a psychological horror, as well.
You should put as many genres as you think are necessary I think, because so many movies mix ideas from different sub-genres, it really sounds like you are doing great with all the ideas you have mentioned already though.
I agree with Meh that Torture is better than torture porn, that one has negative connotations.
Az I got your email and will add you to Gtalk spent my weekend in the garden not busting my ass for a change
We definitely want to make sure we dont go INSANE on genres but we also dont want to miss any .. namely having a bunch of great flicks missing subgenres. Not sure how we do that but Az and others helping DG and I will help alot.