Why does the most important writer in English, J.K. Rowling, haunt the sewers of the Twittersphere? Why try to deal with the many complexities of transgenderism in a medium that has bizarrely reinvented the brevity of the telegram, but without its Victorian culture of complexity, courtesy and calm? Indeed, Twitter prizes a quite different Victorian moral order, namely that of Jack the Ripper, as the baying muezzins of social media hourly pronounce the end of someone’s reputation in the merciless perpetuity of the internet.