Why participate in the key signing? Among other things, all Apache releases are PGP-signed; but a key with no signatures attesting to its own authenticity isn't very useful. Bring your key (which you will have emailed to our special address at apachecon-keysigning@apache.org,) and sign. You will need a pen, and some manner of identification.
Please see the wiki page for more information:
http://wiki.apache.org/apachecon/PgpKeySigning