The social media website has updated its official rules relating to online abuse and what materials can be posted on its network, by broadly outlining a range of impermissible behaviours and transmissions.

Last Friday (Saturday morning in Australia), Islamic State terrorists attacked several locations in Paris, France, killing more than 120 people and injuring hundreds more. Over the weekend, as more information emerged, reporters and analysts began to speculate that the terrorists used an unlikely tool for coordination: the PlayStation 4. As it turns out, that was all based on a reporting mistake.

Yesterday, a video allegedly uploaded by ISIS demanded that the Japanese government pay $US200 million for two hostages. In it, a cloaked man waving a knife told the Japanese people to pressure their government to pay or the men would die. Online, the country's Twitter users have responded. With a meme.