Great explanation. I think the "Hey Fediverse" thing is what threw me. The up/down votes are familiar from Reddit. I was looking for how boosts would show within Kbin because they appear to be nothing more than an additional popularity metric (which seemed superfluous when you have upvotes) but I'm following myself from Mastodon(!) and I boosted your reply and I can see it from over there...

This is great. I've not created a magazine but I've been curious about how Mods associate microblog posts with the magazine. I'm assuming that's through the "Tags" tab you describe on the moderation page.

There are a couple of things I'm still puzzled about, one is the distinction between upvote/boost (despite having been on here for a couple of months and read several explanations I'm still confused). The other, though it is a bit niche, is how to subscribe to an entire instance, which I know is possible (I think I even did it once) but is a very well hidden feature...

Yes - I regularly visit Proboard forum with 75 registered active users in the past 24 hours, and a phpBB one which also has a decent number of regular posters.