Yes, the tagging system is really interesting.

Pretty fleshed out UX, feels like Facebook in 2007 when it was just a few nerds who never met irl and your parents or teachers didn’t know what that is.

Pubky uses this tagging system that lets everyone curate their feed or signal fake news/scams. Pretty interesting, as it relies entirely on participants to add tags and confirm/deny them.

Also, it’s interoperable with Nostr. You can join with the account you already have.