The success of DRM-free bundles has been a powerful counterargument to the claim that Digital Restrictions Management is necessary for sustainable digital publishing. These bundles are forming around music and literature, and really showcase being DRM-free as a major selling point. Now, the Big Bang Bundle by StoryBundle has just launched, and the Humble Music Bundle has just a couple hours to go! Both of these are pay-what-you-want bundles that allow you to choose how much money goes to the artist, to the bundle, and to the charity they are benefiting.
Details at http://www.defectivebydesign.org/node/2244