Abstract: A professional referral system on a website including a data base and server coupled thereto and further coupled into a publicly available website. The data base including a plurality of vertical business groups stored therein, each vertical business group including a plurality of ad-slots with each ad-slot including information relative to a member of the vertical business group, and each member of the vertical business group being identified by a unique referral code. The data base and server designed to retrieve a member's information stored with reference to at least one of the ad-slots in response to entering of the member's referral code and any request for information in the remaining ad-slots of the vertical business group.