if any of you don't know already. Consider anything and everything on mastodon as PUBLIC, and archived widely. Including, private chats.
also, consider the password you used on mastodon, to be semi-open secret. (don't ever let it be the same as your back or main email, for example.)
also, consider your blocking, muting, etc, totally public. Any can still read your stiff if they wanted.
lastly, remember, instance admin potentially knows everything you ever did on the instance.