Wanna see a cool new feature of Mastodon v4?
Now everyone #OnHere is also on Plush.City! And every other instance running #Mastodon4.
Direct links don't work, they redirect; but followed links inside a site will display profiles and posts from any other instance whether they're running #Mastodon or not.
The Worst Case Scenario (cw: nasty stuff)
@Felthry Let's say a bad actor wanted to get us in trouble, so they find someone on an instance that allows users to post explicit illegal photos of minors that used a hashtag one of our users used- if we hadn't blocked that instance yet, they could take screenshots of that user as though they were a user of our instance- and given the domain name, illegal content technically would be flowing through our server, which makes us partially liable.