I really liked the sex, I liked the abuse, I liked seeing the various striations of society that Cat navigated successfully and not. I liked the mystery! I liked that Ms.Vinge thought seriously about how psionic ability would come to pass, how it works in concert with tech, how far one could go with it- into the nanoverse? Wild. It's like that old movie Tron but in a book. I thought about those concepts alot. Very interesting. I liked this book!