Anyone who’s ever attended a class or taught in the humanities has experienced a cultural commons, be it students sharing their writing, professors sharing their favorite works of literature, philosophers sharing and debating ideas. Sharing is part of what makes us human. Technologies have facilitated this sharing in a variety of ways (the quill and pen allowed a voice to traverse time and space; the printing press allowed quick and reliable reproduction of texts), but digital media present a special case. Through networking technologies and digital transmission, we now have available an historically unprecedented capacity to share our cultural resources and to contribute to what humanists have called “tradition” since the ancient Greek era of oratorical and sometimes print culture. No longer restricted to dusty tomes in library stacks, tradition is now dispersed and rewritten on websites, blogs, in wikis, on video- and audio-sharing sites, through podcasts, and even over portable devices such as PDAs.