“Twitter is great for news, except when there’s actual news.” So tweeted Neetzan Zimmerman, Whisper editor-in-chief and renowned social-media cognoscente, an hour or so after news first broke about Malaysian Airlines flight MH17 going missing over Ukrainian airspace on Thursday. As I write this, the story is still developing. An initial report by Interfax, a Russian non-governmental news agency, stated that “50 km away from Russian airspace, the plane began descending, then it was observed burning on the ground on Ukrainian territory.” There are, apparently, no survivors.