Included in the whitelist application should be something along the lines of: If you were referred here, please put their IGN: Every friend you refer you get 1k. Just a thought.
Would be great.. So long that it doesn't get abused. If there was a way where andrew wouldn't mind checking each time so that a player could abuse this - Then that'll be great idea. It stimulates users to refer their friends to the server = More users.