I've been wondering about the handling of PR / legal / moderation issues on The Fediverse. Surely if it becomes popular, those burdens will fall on the shoulders of well-intentioned volunteers who just wanted to run a server, who will generally be ill-equipped to deal with them? I guess it could be OK if you're running a small invite-only server for people you know, but not sure how it's going to work for larger instances. Which, looking at the history of email, are probably where most people will want to be.