A visionary and optimistic thinker examines the tension between privacy and publicness that is transforming how we form communities, create identities, do business, and live our lives. The internet, Jarvis argues, will change business, society, and life as profoundly as Gutenberg's invention, shifting power from old institutions to us all. Based on extensive interviews, Public Parts introduces us to the men and women building a new industry based on sharing. Some of them have become household names—Facebook's Mark Zuckerberg, Google's Eric Schmidt, and Twitter's Evan Williams. Others may soon be recognized as the industrialists, philosophers, and designers of our future.