I don't really know -- I'm a user, not an analyst. But the two things that drew me in were: 1. There's no global firehose that your posts automatically get dro

I don't really know -- I'm a user, not an analyst. But the two things that drew me in were: 1. There's no global firehose that your posts automatically get dropped into. I'm a generally shy person, and one of my particularities is that I don't want my content (or, well, existence) to be pushed at somebody who didn't specifically ask for it. The number of social media platforms that meet this criterion is vanishingly small, because everybody and their uncle wants an Algorithm (tm). Mastodon instances also have a default instance firehose; I'm told people don't really look at that, but the fact that it's there at all makes me overthink posting, and I end up not posting at all. Instead of a global firehose, you can add free-form tags to your post that act like much, much more localized streams of posts. You don't have to use tags at all; and you can also use completely nonsense tags that are more like footnotes, in a very Tumblr style that I enjoy. 2. The UI is wider than Twitter, or Facebook, or Mastodon. It feels like it's more inviting to longer-form content, and while there's plenty of short blurbs and memes to be found, there's just a much higher proportion of blog-style content. Also, the way reposting and commenting interact is just way better IMO. If you repost something, the comments on the original post are visible above the comments on your repost, and that makes the whole chain of interactions feel more cohesive. In contrast, quote-retweeting on Twitter creates entirely separate bubbles of discussion (often at odds with each other). And on Cohost, while you can create a repost chain to make a kind of "thread" equivalent, the UI naturally discourages it in favor of just making a single long-form post.