Any guides to federation with lemmy? I came across a few but they weren't very good. Or is it just a [@fosstodon](https://fosstodon.org/@fosstodon) thing that when I look up a group it never shows any messages, e.g. [@australia](https://reddthat.com/c/australia) [\#redditblackout](https://fosstodon.org/tags/redditblackout)