FYI: the domain transfer is complete, http://clojurians.net now redirects directly to the long-live "join Slack" link. http://clojure.org has been updated to use http://clojurians.net as the Clojurians Slack chat link again on the Community Resources page. I believe everywhere else was still referring directly to http://clojurians.net (and http://clojurians.slack.com for the actual chat) so everything should be working again now. If anyone sees someone having trouble signing up for Slack, please bring it to our attention here. We'll try to keep an eye on the invite link and make sure that if we get any prior warning about the 2,000 signup limit being reached, we'll get a new invite link created and the http://clojurians.net domain redirect updated as well.