Meta is replacing its third-party fact-checking program with a crowdsourced Community Notes system, similar to X (Twitter), starting with testing in the US on March 18. This aims to provide a broader range of user perspectives and reduce bias.

Mark Zuckerberg and Elon Musk were once poised to fight in a cage match in 2023, before Zuckerberg called it off, saying that Musk was "not serious." Now, the two billionaires have gone from the brink of battle to using each other's technology.

Meta will begin testing its Community Notes feature, which replaces fact-checking with crowdsourced commentary, next week. It relies on X's open-source tech.