This is interesting integration – because in Google Books, the words are not text and can not be copied – but somehow the organic SERPs are able to intepret them.

Which could mean that entire books may actually be in Google's Databases as text – but filtered as a image-like file for the book search excerpts

http://www.google.com/search?hl=en&q=%22faith+plotkin%22

http://books.google.com/books?id=eKRyyOIJgqQC&pg=PA87&lpg=PA87&dq=%22faith+plotkin%22&source=web&ots=YD-JshzVL4&sig=0O0vFwF_7NXrsVCq6L7Gf8waT2w