Abstract
The new forms and practices of communication on the Internet open up an interdisciplinary field of research within which social media interaction is a central research area. In the first months after the outbreak of the Corona pandemic (2020), fake news has been spread massively via social media. Social media data allow the extraction of large amounts of data and can be used in a variety of ways, e.g., to detect side effects of drugs or to identify groups of people who are critical of certain treatments. Drawing on comments on the discussion platform Reddit, the article reveals the role of everyday experience in fixing knowledge about the placebo effect.