Books about books--a great list of suggestions

One of the things that's happened in the last few years is that publishers are starting to repurpose thier websites as content hubs. thus you have Macmillan's crime fiction site Criminal Element, which features numerous bloggers contributing articles and reviews, along with excerpts and contests and sweepstakes.Penguin/Random House is no exception. They have exceptionally engaging content, including their READ DOWN feature. One of the offerings today is a list of books about books. It's an eclectic list (Ink and Bone, The Book Thief, The Fault in Our Stars) and even if it is heavy on Penguin books, that doesn't take away from the suggestions.