Whatever you may think of Google's scan-every-book-on-the-planet play, they have added some interesting new Google book search features. According to the Google blog, they've tried to make the search more like your experience with a paper book. You can scan through it looking for pictures (and get clickable thumbnails), improved preview of the book, improved context around the search terms, and others. They've provided a feature so that you can embed previews of books on your websites and blogs. It's not clear if there is an affiliate program in the works using this feature.