>超シンプルなWebsocketのクライアント-サーバーモデル。サーバーがシンプルなリレー。

> ほぼ"電子署名前提になったIRC"とも言えるかも。

>Everybody runs a client. It can be a native client, a web client, etc. To publish something, you write a post, sign it with your key and send it to multiple relays (servers hosted by someone else, or yourself). To get updates from other people, you ask multiple relays if they know anything about these other people. Anyone can run a relay. A relay is very simple and dumb. It does nothing besides accepting posts from some people and forwarding to others. Relays don't have to be trusted. Signatures are verified on the client side.

>Twitter has ads;

> Twitter uses bizarre techniques to keep you addicted;

> Twitter doesn't show an actual historical feed from people you follow;

> Twitter bans people;

> Twitter shadowbans people.

> Twitter has a lot of spam.

>User identities are attached to domain names controlled by third-parties;

> Server owners can ban you, just like Twitter; Server owners can also block other servers;

>Migration between servers is an afterthought and can only be accomplished if servers cooperate. It doesn't work in an adversarial environment (all followers are lost);

>It doesn't make sense to have a ton of servers if updates from every server will have to be painfully pushed (and saved!) to a ton of other servers. This point is exacerbated by the fact that servers tend to exist in huge numbers, therefore more data has to be passed to more places more often;

>The most popular server is Mstdn.social, a general social server that boasts more than 75,000 user