@MichaelLondonSF @kerstinsailer
To learn more about how Mastodon (and other Fedi sites) works, it's worth reading the @feditips website.
:fediverse:
Or just ask when you get stuck.
I gather that it's polite to reply with unlisted posts. But I think they're still available on the tags.
Unlisted posts just won't get shared to the general public server stream of posts. At least that's how I think it works.