@Concerned_Catgirl I guess they could do that, but they can't then turn around and put a load of microtargeted ads towards you without your instance admin helping them.

@Concerned_Catgirl Well, they can't just make stuff appear in your feed without it being part of a natural interaction. While FB and Twitter have an closed algorithm control exactly what ou see in your feed, with Mastodon (and I assume the other fediverse social networks) the timelines are totally based on the time of each post.

@Concerned_Catgirl I think they' have to be able to map your account from Mastodon onto something else however before they could and I don't think that's possible?