It might also be somehow that these social networks are not attractive to people in the audience who are critical of such stories. How long do you want to spen

It might also be somehow that these social networks are not attractive to people in the audience who are critical of such stories. How long do you want to spend on a site debunking stuff? That would not be much fun. Moreover, what would be the effect? Ideally, people would adjust their news filters and start to critical think for themselves. I don't think I've the right educational credentials for that. :-)