Facebook took QAnon to membership levels it never would have reached if it had remained on a far smaller site like 8chan. Unlike Facebook, 8chan lacks the kind of hyper-engineered algorithm aimed at ensuring that users stay logged in and posting. When Facebook finally banned QAnon in October 2020, the movement was widespread enough on the site that cleaning up QAnon meant deleting more than 5,600 groups and 50,000 Facebook profiles.