This year's film about the founder of Facebook and the suicide of a student whose sexual orientation was revealed online have focused attention on Social Networking. We talk about what it is and how it's changing the real world as well as the virtual world. Also, the BCS championship and college bowl games. On Reporter's Notebook, America is divided in so many ways a new book calls it a "patchwork nation." We hear about our national complexity.
Banner image: Mark Zuckerberg speaks during a press conference at the Facebook headquarters in Palo Alto, California on May 26, 2010. Photo: Gabriel Bouys/AFP/Getty Images