Sources: preparing for Zuckerberg's congressional testimony, Facebook hired advisers who are coaching him and role-playing members of Congress in mock hearings — For Facebook, Tuesday is being seen as a kind of dreaded final exam. — That's when Mark Zuckerberg, the company's chief ... from Google Alert - cryptocurrency https://ift.tt/2HmZLu2 via IFTTT https://ift.tt/eA8V8J