I actually think there are a few, only some have achieved critical mass with smaller subnetworks. BlueSky and Threads both seem to have attracted non-tech netwo

I actually think there are a few, only some have achieved critical mass with smaller subnetworks. BlueSky and Threads both seem to have attracted non-tech networks although Threads downranked political content, so BlueSky seems like the natural next mass appeal product. Others: Mastodon: many tech subnetworks (security, data) Nostr and Warpcast: Crypto