-A host can maintain ssh `authorized_keys` files automatically for its
-users with the Monkeysphere. These `authorized_keys` files can then
-be used to enable users to use the monkeysphere to authenticate to
-your machine using the OpenPGP web of trust.
+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.