pgp

Does anyone use PGP or other email encryption methods? I'm somewhat interested in trying it out. But, I have no one with whom to test it. I'm going to try GnuPG since it's free of restrictions. But, I know very little about this whole encryption thing so if anyone can provide a reason to go with a different version do tell me. My PGP key is:

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.0.4 (GNU/Linux)
Comment: For info see http://www.gnupg.org
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=VnBF
-----END PGP PUBLIC KEY BLOCK-----

I'm only going to try to use this with my caltech.edu account since the only way to use PGP with gmail would be through POP.