Account “seasoning,” similar to reddit.

They create an account and give it as human-like a history as possible (a few comments, enough time since registration that it doesn’t look brand new).

Then they sell it to whoever will buy it. This could be content marketers who want to promote a product, nation-states who want to influence Western voters, etc.

I hope I never run across any of those sketchy websites that buy user accounts. Can you give me a list so I can add them to my blocked domains? Opsec is key.