Can crowdsourced fact-checking curb misinformation on social media?

In a 2019 speech at Georgetown University, Mark Zuckerberg famously declared that he didn’t want Facebook to be an “arbiter of truth.” And yet, in the years since, his company, Meta, has used several methods to moderate content and identify misleading posts across its social media apps, which include Facebook, Instagram, and Threads. These methods have included automatic filters that identify illegal and malicious content, and third-party factcheckers who manually research the validity of claims made in certain posts.