Send me S/MIME encrypted email...
hacks
You can now send me S/MIME encrypted email... and if you use GMail and Firefox, you can use the S/MIME Firefox extension for Gmail, too! To download the certificate for my Digital ID: http://josephhall.org/SMIME.txt .
UPDATE [2005-09-13 20:34:36]: Is it just me, or is it difficult to advertise your S/MIME certificate? With GPG/PGP, there are keyservers like http://pgp.mit.edu/ and the ability to export keys.