The Blog World Expo closing ‘talk show’ panel included Rob Barnett, Adam Corolla, Penn Jillette from Penn & Teller, Cali Lewis and Jeff Hayzlett. What’s their secret? Why do they blog? What do they tweet? What is happening with new media and how does it impact them? Listen to hear what these five illuminaries and entertainers think. Says Penn, “Twitter is one of the most intimate ways we can communicate today.” The video is in three parts: Part I, Part II and Part III.