A PGP Keyserver is a place where the PGP users can post their Public Keys so that the rest of the world can access it. This program was originally written by Marc Horowitz of MIT. There are many PGP Keyservers accessible for the public all around the globe and they have formed a network which enables user to get the required information from the nearest available site. Further a New key submitted is automatically updated on all the PGP Key Servers saving the users from a lot of painful work.