On some controversial topics Norwegian broadcaster NRK is asking readers to pass a multiple choice test before they can leave a comment: [niemanlab.org ]
This would probably be a good idea, especially today. So many times when I look at comments, I see things that are totally irrelevant to the story such as "I earned $1,000 a week working at home..." I am sure it is not foolproof, but it could help reduce the amount of nonsense posted.