I’ve been teaching a class on the subject for 3 years, I’ve been giving talks on the subject for almost a year. Finally I set down and wrote the essay for the second edition of the Collaborative Futures book. On Sunday (Aug 1st 2010) I gave a talk based on this essay at DebConf the Debian community conference. The title of the talk is “Beyond Sharing: Open Source Design”. The (high-pitch audio) presentation is available on the Debian site (requires Firefox or another OGV playing browser).