Advertising and incentives over a social network

A method whereby advertisers wish to deliver at least one of offerings and advertising messages relative to at least one of a product and a service to a target audience of users selected by a system operator during an advertising campaign. The method includes defining the users within the context of a social network, selecting the users from among the users of the social network, storing the information relevant to the defined users and utilizing the information stored/defined within the social network to deliver the messages to the users in an optimal manner.