I love/hate Shelfari

First off, let me tell you that I love my Shelfari.  It allows me to keep track of my books, remember what I read and even show off a bit. 

BUT, why isn't Shelfari recommending me books?!  Why aren't they connecting me with people who read the same books as I do?  [Russ can comment on the mechanics behind this, he's been reading up on AI, Neural Nets, Collective Intelligence, etc].

If you've had an extended conversation with me, I've probably asked you if you have read any good books lately.  Or what your favorite books are.  I love hearing what other people read.  I love reading what others read because it helps me understand them and connect with them.

Shelfari has a huge opportunity here.  Why are they wasting it?