So, I had joined Bluesky on an invite last year, tried it out for a few days, saw it wasn't really getting much traction, and bailed, just like most people.
This time feels different. I went to recreat my news/politics feed from Twitter and went to my Following list there to try to follow those same accounts at bsky. I would say that roughly two-thirds of them are not yet there as of this minute, including some real major Twitter players. Of the one-third that are at bsky, I see several of them posted a lot in the June to July 2023 timeframe, then not at all until anywhere from a month ago to a few hours ago.
So it seems like people are rediscovering bsky, and I would bet there will be a huge surge in users and usage every day for the next few weeks, and the Bluesky Surge will become an actual news story at some point before the holidays really get revved up.
Too bad I can't invest a few bucks in them right now. 😁