Unbound provides authors and readers with a way to make ideas into actual books. The author can create a page to pitch their book idea. Unbound users can browse book pitches to find those that they might be interested in reading. When a user discovers a pitch they like, they can choose to support it. By providing a small donation to financially back the idea, the user can contribute to the books creation. If enough users contribute to an author's pitch, then the other commences writing the book. Those who donate are given rewards based on how much they donated.