Second Life is a digital world completely built and owned by its residents. Running on a distributed grid of over 1000 machines, Second Life allows residents to collaboratively create everything from their own bodies, structures, and vehicles to social groups, games, and experiences. Launched 2 years ago, Second Life boasts 40,000 customers, tens of millions of user-created objects and pieces of clothing, over US$2 million per month in internal transactions, a community built around learning from each other, and a phenomenal rate of innovation. Second Life, based almost entirely upon user referrals, maintains a steady 10% monthly growth. Through a demo, Cory Ondrejka will take you through the world of Second Life, explain the technology, economic, and community choices Linden Lab (the creators of Second Life) have made, and surface 5 important technologies that would make Second Life an even better world.