Vint Cerf, one of the "fathers of the Internet," reacts to the rise of social networking.

Ted Leonsis, entrepreneur and former senior executive at AOL, discusses the early start of social networking through AOL's instant messaging.

How did social networking surpass traditional media to set the news agenda of the day? Lee Rainie, Director of Internet Science and Technology Research at the Pew Research Center, finds answers in the way chimps and humans build communities.

Lee Rainie, Director of Internet Science and Technology Research at the Pew Research Center, marvels at how the web has inspired so many people to tell their stories -- and how that newfound freedom is jeopardized by government censorship.

Lee Rainie, Director of Internet Science and Technology Research at the Pew Research Center, envisions the world of the near future, where omnipresent sensors and vast networks of machine to machine communication influence every aspect of our lives.