http://video.ted.com/talks/podcast/audio/YochaiBenkler_2005G.mp3 TEDTalks : Open-source economics - Yochai Benkler (2005) http://feedproxy.google.com/~r/tedtalks_audio/~3/b7JEy1Tjd9Q/247 2008-04-15 http://www.odeo.com/uploads/0007/5290/serial_109709_medium.png