A system comprises an interface for enabling a user having a web property to input advertisement information including a web property advertisement, criteria indicating when presentation of the advertisement is desired by the user, a bid for the presentation of the advertisement when the criteria are met, and subsequent modifications to the advertisement information; geographically distributed servers, a plurality of the geographically distributed servers for storing the advertisement information, at least one of the geographically distributed servers for receiving a request for advertisement content from an advertising channel, at least one of the geographically distributed servers for determining whether the request meets the criteria, and at least one of the geographically distributed servers for forwarding the advertisement to the advertising channel in response to the request when the criteria have been met; and a distribution component for propagating the advertisement information to the geographically distributed servers according to an arrangement.