Alongside the announcement that Facebook has reached one billion active users, CEO Mark Zuckerberg sat down with Bloomberg Businessweek and NBC News to discuss the social network. Topics in the interviews included the accelerated rate of sharing, which Zuckerberg describes as growing at an "exponential rate," plus the "tough cycle" the company is going through on the stock market. With billions of people owning mobile phones and the social network yet to enter the Chinese market, Facebook's rapid growth looks set to continue, even if questions regarding monetization still linger.