Let's be real here, guys: It's hard for a book blog not to be boring. A blog about the book industry at least still has the potential to get people fired, even if its visual interest is sometimes limited by how often it becomes necessary to illustrate a post with clip art of a pile of paperbacks. But how interesting can reading about reading ever be, even to people who are total nerds about things like book trailers and the ethics of book reviewing? The answer is: Intermittently, very -- especially if you branch out beyond old standbys like Maud, Ed, and Mark. If you're not already checking out the book-related content on these sites, you should be. That is, when you're not reading GalleyCat.