Japan tsunami: How the news spread on Facebook Summary: The news quickly spread to some parts of Asia, North America, and Europe. Facebook penetration in South America and Africa is noticeably lower. By Emil Protalinski | March 14, 2011 -- 08:48 GMT (01:48 PDT) Follow @emilprotalinski Previous | Next Image 8 of 10 The number of status updates significantly increases on the West coast in North America. Topic: Social Enterprise Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.