-And then read the section below about how to ensure these files are
-maintained. You'll need to restart `sshd` to have your changes take
-effect. As with any change to `sshd_config`, be sure to retain an
-existing session to the machine while you test your changes so you
-don't get locked out.
+See http://web.monkeysphere.info/signing-host-keys/ for more info
+signing host keys.
+
+Monkeysphere for user authentication (monkeysphere-authentication)
+==================================================================
+
+A host can maintain ssh-style `authorized_keys` files automatically
+for its users with the Monkeysphere. This frees you (the
+administrator) from the task of manually checking/placing SSH keys,
+and enables users to do relatively painless key transitions, and to
+quickly and universally revoke access if they find that their ssh key
+has become compromised.
+
+You simply tell the system what *person* (identified by her OpenPGP
+User ID) should have access to an account, the Monkeysphere takes care
+of generating the proper `authorized_keys` file and keeping it
+up-to-date, and `sshd` reads the generated `authorized_keys` files
+directly.