The Sustainability Practice Network (SPN) organized an event that took place yesterday at Green Spaces to discuss the trend of collaborative consumption, which was identified by Time in 2010 as one of the 10 ideas that will change the world. The talk was moderated by Roo Rogers, founder of Ozolab and panelists included the entrepreneurs Jen Abrams, Our Goods; Ron J. Williams, SnapGoods; Paul Steely White, Transportation Alternatives;