I still don't know how this works. And nostr seems to just be all people talking about nostr

We do love talking about things we're passionate about. But, check out the grownostr hashtag for non bitcoin and nostr content.

The hidden power of Mastodon is that you can follow hashtags in exactly the same way as people. So follow #podcasting and you see every post that people add that hashtag to. A great way to broaden your follow list.