I'm going to be real: it kind of looks like the AT protocol used at bluesky social is going to work better than the thing mastodon uses. I maybe expect to end up there? I'm @dfilan.bsky.social
But algorithmic choice looks cool, as does domain names as handles as an identity verification method. https://blueskyweb.xyz/blog/3-6-2023-domain-names-as-handles-in-bluesky
Worst feature is they don't seem to have a website yet.