Have you tried
http://www.gnooks.com/
"Gnooks is a self-adapting community system based on the gnod engine. Discover new writers you will like, travel the map. of literature and discuss your favorite books and authors. "
"Gnod is an experiment in the field of artificial intelligence. Its a self-adapting system, living on this server and 'talking' to everyone who comes along. Gnods intention is to learn about the outer world and to learn 'understanding' its visitors. This enables gnod to share all its wisdom with you in an intuitive and efficient way. You might call it a search-engine to find things you don't know about."