Houghton Mifflin Harcourt has partnered with social networking site for readers Libboo. The two companies have launched an online pilot program to help HMH promote books.

AppNewser has more about the partnership: “The two Boston-based companies have created a three-month program to offer readers access to some of their books. Readers who share these books through their own social networks will be able to earn free eBooks. ‘Libboo’s unique platform allows our authors to share their work with an even wider audience using the power of social media,’ stated Gary Gentel, president of HMH’s trade and reference division.”

HMH will be showcasing the new books Diving Belles by Lucy Wood, The Heart and the Fist by Eric Greitens and How Children Succeed  by Paul Tough, as well as a number of previously published titles by HMH authors.