I'm known either as Joel or as nemo. I wrote a longer essay about names. I currently have the ham radio callsign KB1GRS.
I've written patches against openssh which allow it to use gpg for the host key and for user authentication. I'm hoping that this sort of mechanism will eventually reduce the amount of blindly accepting ssh host keys that invariably happens today.
I had set up a secondary mail server for the FSF; here are some details of how it worked. (Sadly, it seems that the current maintainers of various GNU machines have decided that this setup is too complicated for them to deal with, and there's now a single point of failure in the mail system there.)
These two photographs of me were taken by samus in June 2005:
