Publicity has always been important for authors. Mark Twain promoted his books by writing letters to the paper, and even Agatha Christie, who was known for being very private, still did interviews with prominent newspapers. Yet some authors think this kind of publicity is old-fashioned. In a world dominated by social media, do we even need traditional PR anymore? If you've ever wondered how to get your book featured in the media—or whether it's even worth trying—you won’t want to mis...