A panel of the architects doing the most to move peer-to-peer from a collection of ad hoc applications into full-fledged infrastructure: Ian Clarke of Freenet, Ray Ozzie of Groove, Johnny Deep of AIMster. These are the people thinking hardest about the hardest questions: what should be standardized and what should be allowed to grow organically? What should be decentralized and what should be centralized, if anything? What is the ideal relationship between groups designing peer-to-peer infrastructure and groups using that infrastructure to build individual applications?