Just to make things confusing, I have two sets of keys. One for my twomblys.com account(s) and another for my work (apple.com) account.
You can download my public pgp key for apple.com by clicking here.
You can download my public pgp key for twomblys.com by clicking here.
Once you have the public key(s) downloaded, you can import them by issuing the following shell command: /usr/local/bin/gpg --import /Local/Path/To/apple.gpg (Switch apple.gpg with martin.gpg for my twomblys.com key).
I also have them registered with public key servers. Check the MIT PGP Public Key Server.