  Facebook and Twitter recently announced community-based review platforms to
address misinformation. We provide an overview of the potential affordances of
such community-based approaches to content moderation based on past research
and preliminary analysis of Twitter's Birdwatch data. 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 infrastructure focuses on crowd-based "validation" rather than
"collaboration." We call for multidisciplinary research utilizing methods from
complex systems studies, behavioural sociology, and computational social
science to advance the research on crowd-based content moderation.
