PGP keys

On Tuesday 09 September 2003 02:00 pm, Derek Neighbors wrote:
> http://www.cryptnet.net/fdp/crypto/gpg-party.html#ss1.1

The instructions above, don't go into much detail about public key servers.
That's OK because I can read up on it in many other places.

My question is: Which public server to use? Is there a preferred or "most
used" one?

Alan