There's a revolution going on, as ever-accelerating developments in digital information technologies change nearly every aspect of how we live, work, play, do business, and engage in politics. Share and share alike, the numbers say it all as billions of people worldwide flock to online media and use social networks to discover and spread news and information. In the process, ever-growing networks of "ordinary people" are using these powerful new tools to trim the influence long held by Big Business, Big Government, and Big Media. No longer just passive recipients, participants in social networks now regularly make and break news while organizing civic and political actions that bypass censors, outpace traditional media, attract massive audiences, and influence the rise and fall of brands, industries, politicians, and even governments. In this insider's look at how social media are transforming our world, Rory O'Connor explains the trends and explores what tech visionaries, media makers, political advisers, and businesspeople are saying about the meteoric rise of the various social networks of friends and followers, and what they bode for our future.