It's all too easy for comment sections to get nasty, especially when people rush to spout off without having read more than the headline. How does a site prevent rants from showing up without resorting to cutting-edge tech? If you're Norway's NRK, the answer is simple: make people take a quiz. The news outlet is trying out a system that asks you to pass a short multiple-choice test, making sure you've at least had a cursory read-through before you share your opinion. It leads to more informed discussions, as you might guess, but it also introduces a brief delay that might give you a chance to cool down and write a more rational comment.