I've been self-hosting Mastodon for a while and mostly using it to share bird photography, but also to provide comments on a static site. Since Mastodon and Lemmy both speak ActivityPub, those get crossposted to /c/flashlight so Lemmy comments are also included on my site. Federation is cool.

I don't follow many accounts that post Fediverse meta stuff on Mastodon. While I have some interest in the best examples of that content, the only way to attract a broader community is to promote accounts and content appealing to the interests of that broader audience.