Bookscout is a book recommendation service based on what you have liked on Facebook. As such you don't have to do any work at all with it, other than to have liked some books in the past. If your friends are using the service as well BookScout can work with their recommendations as well. It says of itself "Make reading more social! BookScout will use your Book and General Interest “Likes” to scout out a hand-picked selection of book recommendations just for you. When you “Like” or “Add” a book, the book is displayed on your Newsfeed. BookScout also allows you to share books with your friends, and check out their bookshelves for recommendations. Don’t worry: Facebook spaces out your interactions with books, so you won’t be spamming your friends with every book you like. You can change your app privacy settings at any time"