@HackerNewsBot again this is making my head hurt. They are trying to compare Apples to oranges. #mastodon is not Twitter and is not email. It is it's own social media platform with it's own way of connecting users together. If i could compare it to anything it would be AOL groups. You could join any number of them you wanted. The only difference is unlike AOL Groups they can't talk between them like Mastodon can. So just because there are lots of different severs for mastodon users to join they all communicate together.