DRM doesn't work. Every file ever released with DRM locks on it is currently available for free download on the Internet. You don't need any special skills to break DRM these days: you just have to know how to search Google for the name of the work you're seeking. No customer wants DRM. No one woke up this morning and said, "Damn, I wish there was a way to do less with my books, movies and music." DRM can't control copying, but it can control competition. Apple can threaten to sue Real for making Realmedia players for the iPod on the grounds that Real had to break Apple DRM to accomplish this. The cartel that runs licensing for DVDs can block every new feature in DVDs in order to preserve its cushy business model (why is it that all you can do with a DVD you bought ten years ago is watch it, exactly what you could do with it then -- when you can take a CD you bought a decade ago and turn it into a ringtone, an MP3, karaoke, a mashup, or a file that you send to a friend?). DRM is used to silence and even jail researchers who expose its flaws, thanks to laws like the US DMCA and Europe's EUCD. In case there's any doubt: I hate DRM. There is no DRM on this book. None of the books you get from this site have DRM on them. If you get a DRMed ebook, I urge you to break the locks off it and convert it to something sensible like a text file. If you want to read more about DRM, here's a talk I gave to Microsoft on the subject: http://craphound.com/msftdrm.txt and here's a paper I wrote for the International Telecommunications Union about DRM and the developing world: http://www.eff.org/IP/DRM/itu_drm.php =============================================================== Creative Commons Attribution-NonCommercial-NoDerivs 2.0 License =============================================================== THE WORK (AS DEFINED BELOW) IS PROVIDED UNDER THE TERMS OF THIS CREATIVE COMMONS PUBLIC LICENSE ("CCPL" OR "LICENSE"). THE WORK IS PROTECTED BY COPYRIGHT AND/OR OTHER APPLICABLE LAW. ANY USE OF THE WORK OTHER THAN AS AUTHORIZED UNDER THIS LICENSE OR COPYRIGHT LAW IS PROHIBITED. BY EXERCISING ANY RIGHTS TO THE WORK PROVIDED HERE, YOU ACCEPT AND AGREE TO BE BOUND BY THE TERMS OF THIS LICENSE. THE LICENSOR GRANTS YOU THE RIGHTS CONTAINED HERE IN CONSIDERATION OF YOUR ACCEPTANCE OF SUCH TERMS AND CONDITIONS. 1. Definitions 1. "Collective Work" means a work, such as a periodical issue, anthology or encyclopedia, in which the Work in its entirety in unmodified form, along with a number of other contributions, constituting separate and independent works in themselves, are assembled into a collective whole. A work that constitutes a Collective Work will not be considered a Derivative Work (as defined below) for the purposes of this License.