Web 2.0 Summit 2010: Mark Zuckerberg,

"A Conversation with Mark Zuckerberg"

http://www.youtube.com/watch?v=Czw-dtTP6oU

How Great Entrepreneurs Think

http://www.inc.com/magazine/20110201/how-great-entrepreneurs-think.html

15 Essential Social Media Tools for PR Agencies

http://oneforty.com/blog/15-essential-social-media-tools-for-pr-agencies/