So, I was thinking that I joined Lemmy.World because Lemmy had more users than MBin. But today I was looking at https://mbin.cocopoops.com/ and started seeing MY posts. I knew Mbin could have different instances. I knew Lemmy could have different instances. And I knew they all federated together.
But I didn't know Mbin could federate with Lemmy. But I'm sure Lemmy/Mbin probably won't federate with Pixelfed, or Peertube.
Mbin, piefed, and Lemmy are essentially reddit replacements. So they should be in a circle. It doesn't matter how many users Mbin has, or piefed has, or Lemmy has. It matters how many the full circle of federated reddit replacements have. Because thats the true circle of users that you can interact with.
So what we need is a website that you enter an instance, and it tells you how big your circle would be on that platform, and a list of federated, and defederated instances with it.
So Lemmy.World would have a pretty high circle. While hexbear would have only itself, if I understand right.