\item``Hackers: What they do, and why they do it.'' Eric von Hippel's User-Centered Innovations (15.969). MIT Program in Systems Design and Management. February 20, 2009.
\item``Hackers: What they do, and why they do it.'' Eric von Hippel's How to Develop "Breakthrough" Products and Services (15.356). MIT Sloan School of Management. February 17, 2009.
\item ``Introduction to Free Software and Open Source.'' Hiroshi Ishii's Futurecraft (MAS.921), MIT Media Lab, MIT. October 1, 2008.
\item``Hackers: What they do, and why they do it.'' Eric von Hippel's User-Centered Innovations (15.969). MIT Program in Systems Design and Management. February 20, 2009.
\item``Hackers: What they do, and why they do it.'' Eric von Hippel's How to Develop "Breakthrough" Products and Services (15.356). MIT Sloan School of Management. February 17, 2009.
\item ``Introduction to Free Software and Open Source.'' Hiroshi Ishii's Futurecraft (MAS.921), MIT Media Lab, MIT. October 1, 2008.