The https://kbin.social server is now federating with the Fediverse. You can follow/interact with kbin.social magazines & users from other Kbin servers, Mastodon & rest of the Fediverse. For example the TIL magazine is at @TodayILearned, the lead dev of Kbin is at @ernest
There's a new Kbin server at https://readit.buzz which is run by the same people as the Universodon.com Mastodon server. It's open for signups, just click "log in" and then "register".