LibraryThing

So I've started playing around with LibraryThing, which seems to be an interesting take on social networking based on books -- which are, well, kinda important to me. The site seems to be a unique way of seeing what books other people own, of getting some feedback on them, and of garnering recommendations for books you otherwise might have missed. It seems to be amazon's "Customers Who Bought This Item Also Bought..." list on steroids, and much better thought out.

Anyone else out there a member of this? What's your take on it?