  Facebook announced a community review program in December 2019 and Twitter
launched a community-based platform to address misinformation, called
Birdwatch, in January 2021. We provide an overview of the potential affordances
of such community based approaches to content moderation based on past
research. While our analysis generally supports a community-based approach to
content moderation, it also warns against potential pitfalls, particularly when
the implementation of the new infrastructures does not promote diversity. We
call for more multidisciplinary research utilizing methods from complex systems
studies, behavioural sociology, and computational social science to advance the
research on crowd-based content moderation.
