@piratepost@poliverso.org if it's on poliverso, then users from the "threadiverse" should be able to find it with !medmastodon@poliverso.org. And iirc, Friendica groups (or the equivalents from Lemmy, Mbin & PieFed) on Mastodon can be treated as both hashtags, and as users, e.g. on mastodon.social.