Abstract:False information spreads on social media, and fact-checking is a potential countermeasure. However, there is a severe shortage of resources of fact-checkers, and an efficient way to scale fact-checking is desperately needed, especially in pandemics like COVID-19. In this study, we focus on spontaneous debunking by social media users, which has been missed in existing research despite its indicated usefulness for fact-checking and countering false information. Specifically, we characterize the fake tweets that… Show more
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