Diane Sawyer Interviewing Mark Zuckerberg As Facebook Announces 500 Million Users

Diane Sawyer Headshot On Wednesday, Diane Sawyer will be speaking with Mark Zuckerberg, presumably around the time that the company will announce that they’ve surpassed 500 million users. The day before, Swayer will be interviewing UK Prime Minister David Cameron who also recently sat down with Mark Zuckerberg via a Skype video chat. The full details are on the WebNewser blog.