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
People creating anything anywhere are “contributing” (having their work used without permission) to LLM and image generation companies, because these companies don’t actually respect anyone and don’t care about anything except sucking as much money out of you as possible.