Watch Almost No One Attended Mark Zuckerberg's 2005 Lecture at Harvard

The social networking site, which he started during his sophomore year in Feb. 2004, had expanded to 2,000 schools, with 400 million page views per day and 50 employees. After his introduction from Professor Michael D. Smith, Zuckerberg gets halfhearted applause from the small audience. "Yo," Zuckerberg says. "All right. Sweet. This is one of the first times I've been to a lecture at Harvard."