as listed on https://bitcointalk.org/index.php?topic=268955.0
Bitcoin 101 Blackboard - Why Bitcoin is Not a Ponzi Scheme - Debunking Bitcoin Myths
http://www.youtube.com/watch?v=7u4F8cpzqao&list=PLzctEq7iZD-7-DgJM604zsndMapn9ff6q&index=2