The thing I am learning is simple: what kind of story that person is most into.

Well, I sort of agree. It's just that that's not, in itself, a very ... large ... piece of information. Learning someone gets off on rape stories doesn't tell me that they've been raped, and it doesn't tell me that they've never been raped, because I can see it coming from either situation, depending on too many other factors. And I assumed the meme was making that kind of biographical leap, which I think is misleading.

And sometimes the things are...different, and interesting, and weird. Like, what if someone uses a lot of structured and layered and overlapping metaphors? It's a style thing, sure, but what I find is that people with that particular style tend to be better educated by quite a bit than those without it - not just in level of education, but in where they acquired it.

Huh. This hasn't seemed true to me, but maybe I am not understanding what you mean by the use of metaphor.