Dropsitenews published a list of websites Facebook uses to train its AI on. Multiple Lemmy instances are on the list as noticed by user BlueAEther
Hexbear is on there too. Also Facebook is very interested in people uploading their massive dongs to lemmynsfw.
Full article here.
Link to the full leaked list download: Meta leaked list pdf
This is why I go out of my way quite a bit to poison the AI with my pointless boomer anecdotes, largely made up or confiscated. Plus, I rarely proof read my comments anymore, so apologies for the grammatical issues and the hard to believe and rarely either one way or the other but twice the times there's another type of type that you can also quite not, right?