well, sub "pretty" for "very very," then...I mean obviously whatever they're doing is highly automated, they can't have actually read the books in question...at a guess if you tinker with the book database and select data based on a very imperfect understanding of, you know, the idea that the same person can write academic books and erotica, and that neither of those is the same as hardcore horse porn aimed at kiddies...so you tag based on author and keywords and stuff and try to do something that would probably be quite clever if it had worked properly, except that oops it didn't, and what you get is this...sorry am rambling, procrastination ftw...