I've heard about that fenoxo guy before I think. He writes a lot of CYOA stuff with dark content and all that.
I guess I'll check it out.
EDIT: Well it was okay from what I read of it, until I got some message that said "60 click limit" and I couldn't proceed any more. Some of the links were dead too, though I'm used to that from stuff at IS.
Seemed like the main focus was just fucking a bunch of people at random and causing inappropriate pairings, like the mother and son. Not that there is anything wrong with that, but a demon possession story was always one I sort of toyed with and I thought it would be more interesting to have to build up to being able to possess someone, like raising paranoia, increasing anger, corrupting those around the possessed and then finally unleashing a murderous rage so it destroys the host and everything they love dear.
And of course if you're not efficient at doing this, you get people calling in priests, ghost hunters, psychics and the like to banish you.