Anyone on a federated server can see this post. I’m on my own personal server for example. There’s no local content whatsoever. I’m getting all content through federation which basically means that all the servers are agreeing to talk to each other and share content. It’s like a group chat but for websites.

Hello from feddit.de

Give me five bucks and I’ll let you see this post with Greg.

In the same way you cannot see my comment, I cannot see your post.

I can see it from lemm.ee

I am on lemmy.world and can see it