Erik Benson is continuing his work extending the idea behind Weblog Bookwatch with a new site called All Consuming. One nice feature is that he's keeping a cached copy of the weblog on hand so you can see exactly where the book link is in the context of the blog. (A problem I'm attempting to solve by letting people "focus" the link for each book by providing the permalink for the post that mentions the book.) Seeing what he's put together so far has me looking forward to more development. There's so much to be done in this area.