But the interesting thing for me isn't activity — it's the people on there.
Of the cohort who had >100k followers on Twitter, I think more of them post regularly on Bluesky than post on Mastodon. Bluesky definitely has a more cohesive feel, especially because there's currently just one instance & mod team.
I wonder if BlueSky intends to follow on those. For example, hiding user actions counts (repeats, favourites, etc...) until the user acts on one.
Things like these may be strange for those accustumed to Twitter, but personally, is what makes me stick with smaller instances on the Fediverse.
To me, the ActivityPub network (Mastodon and friends) is relatively unique in the social media space in having no direct commercial pressures (the protocol is developed by W3C) and therefore being inoculated against the causes for these dark patterns.
It's pretty active during North American hours.
https://vqv.app/stats/chart is useful for Bluesky and draws on the Bluesky firehose for data. https://stats.nostr.band/ seems useful for nostr.