This site is “taking the edge off rant mode” by making readers pass a quiz before commenting
The team at NRKbeta attributes the civil tenor of its comments to a feature it introduced last month. On some stories, potential commenters are now required to answer three basic multiple-choice questions about the article before they’re allowed to post a comment. (For instance, in the digital surveillance story: "What does DGF stand for?")
This could be very interesting to see implemented across the board.