I was under the impression that boosting follower only posts does not work (via the API too, actually, it returns a HTTP error code if you try to do so), but then again the server code may be modified, or people can just screenshot.
I think this is simply a social problem — when sending a post to your followers, you have to trust that they do not share your post. The same applies in private messaging. You have to trust the recipients.
I think this is simply a social problem — when sending a post to your followers, you have to trust that they do not share your post. The same applies in private messaging. You have to trust the recipients.