GPG Key Server Operations
The server subkeys.pgp.net is the preferred keyserver (for various reasons expounded at length elsewhere).
Adding your key to the keyserver:
[jupiter]gpg --send-keys --keyserver subkeys.pgp.net dave@xdroop.com
gpg: success sending to `subkeys.pgp.net' (status=200)
Telling gpg about the keyserver for retrieval operations: add this line to your ~/.gnupg/options file:
keyserver subkeys.pgp.net
Retrieving a key from the keyserver:
[jupiter]gpg --recv-keys 85A92DCC
gpg: key 85A92DCC: public key "Jim Hayward (RedHat Linux User) <jimhayward@earthlink.net>" imported
gpg: Total number processed: 1
gpg: imported: 1