I love to come across companies or small business that support charitable works through giving back to these organizations. I recently learned about CampusBookRentals.com. This site offers college books for rent, saving 40-90% off bookstore prices. They also offer free shipping both ways and flexible renting periods. With each textbook rented, CampusBookRentals also donates to Operation Smile. You can read more about their Making A Difference program on their site.
Be sure to follow CampusBookRentals on Facebook or Twitter for updates and news on their services.
Disclosure: I was compensated for this post but all opinions are my own.