Does anyone... use this? Is there even a clear description of what it _is_ anywhere? It looks like it's probably an alternative to ActivityPub or that Bluesky thing, but the descriptions all seem very... hype-y.

In any event, I'm not sure that I'd call this successful, precisely. Might be in the future, who knows, can't on a cursory look find anything concrete about usership. But isn't now.

(Also, personally I would not have named a social network thingy over a fake transport system run by evil computers, but that's just me.)

I know many that migrate to this from twitter

It's a protocol. There's frontends like warpcast that emulate twitter and flink which emulates reddit

I've never heard of it, but I love that there's another startup named after a malevolent technology from fantasy or science fiction.