We developed this course and made all its materials freely available because we want as many people in the world to learn computer science on their own terms. We believe that students and self-learners who set out to do the hardware and software projects should have the benefit and challenge of doing original work, without seeing published solutions. Therefore, we request that you don't post solutions publicly on the web, e.g. in blogs or forums. If your course instructor or organizer creates a private space in which students can share their work outside the public domain, that's fine. Likewise, you can share your work with others using a password-protected space. Please use your judgment and help ensure that many more students, like you, will not be denied the thrill of original work and self-discovery. Thx – Noam Nisan and Shimon Schocken