The recommendations are pretty good; even though I only input six books, it was enough for it to recommend books I have on my wish list. Definitely going to play around some more. Plus, the website is super fast, very impressive.

Any chance we could get an API going at some point? Are you planning to open source the work?

I'm interested in the scrapping of Goodreads too. I'm building a book metadata aggregation API and plan on building a scrapper for Goodreads, but I imagine using a data center IP address will be a problem very fast. Were you scrapping from your home network?