Below: What's 4FAC4838B7D8D13FA6D92EDB4145521E79F0DF4B mean?
Also: plain text version.

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.0.6 (Darwin)
Comment: key at http://www.aaronsw.com/pgp

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=OYhV
-----END PGP PUBLIC KEY BLOCK-----

I gladly accept email encrypted to this key. I do not digitally sign my email.

What's 4FAC4838B7D8D13FA6D92EDB4145521E79F0DF4B mean?

Are you coming here wondering what 4FAC4838B7D8D13FA6D92EDB4145521E79F0DF4B means? It's the fingerprint for the above PGP key. It helps verify that you're getting a valid copy of the key, and thus you're directly corresponding with me, not someone who's pretending to be me, or letting someone else listen in.

If you meet me in person, remind me to give you a copy. That way you can be certain that you're getting the right key and nobody on the network is interfering.