Biz Stone also tells Terry Gross: "We're not valued at $10 billion. That's just what people are writing in the newspapers, which unfortunately has the negative impact of my friends thinking I must have $10 billion." Regarding Egypt: "It's important to credit the brave people that take chances to stand up to regimes. They're the star. What I like to think of services like Twitter and other services is that it's kind of a supporting role."