I forgot to mention that I have recently re-enabled myself for PGP (encrypted) e-mail. I’ve really had no excuse not to, since the OSX Mail.app client has a great plugin for supporting it.
For anyone who cares, my current PGP key is available here.
Also, there is a very, very old public key of mine on the MIT PGP servers. It’s way out of date, I no longer have the secret key, and is therefore irrecovable. If you send me something with that key, I cannot read it. Just say no — use the key that is linked, above.