This is my longest running service and will likely remain for a while longer.
XMPP / Jabber
As much as I love XMPP, nobody uses it.
Recently I pulled the service due to spam registrations and lack of users.
I may provide a web client again, but any future registrations will be closed.
Like the push for SSL before the days of free LetsEncrypt certs, I share a opinion that every administrator should provide a
address for each page and service in the future.
Terms of service
What is Mastodon?