[Medical misinformation on social media: should it be corrected or not?].

A lot of medical misinformation circulates on the Internet - especially social media. During the corona crisis, this became an acute and prominent problem. Countering medical misinformation can be done with debunking (refuting misinformation with fact checks) and prebunking (warning people about misinformation and teaching them to recognize it).

The reach of commercially motivated junk news on Facebook.

Commercially motivated junk news-i.e. money-driven, highly shareable clickbait with low journalistic production standards-constitutes a vast and largely unexplored news media ecosystem.