Random House launched a new app for Facebook called BookScout, helping readers find new books online. 

AppNewser has all the details: 

When you first sign up for the app it will recommend books to you based on your Facebook timeline. Then you can select the book and identify whether or not to you want to share it; if you are currently reading it; if you want to read it or have read it; or if you are not interested in it. Based on these responses, the app will continue to recommend books for you as it hones in a more personalized profile for you … it recommends titles from various publishers and not just Random House, so you’ll get a more well rounded recommendation and not just, this is what you might like to read from Random House. The app also lets you browse bestsellers lists by category (which is based on industry sales data), as well as popular titles on BookScout.