Abstract: Disclosed are methods and apparatus, including computer program products, implementing and using techniques for performing a marketing campaign on behalf of an advertiser. A plurality of electronic publishers are in communication with a data network. The advertiser has an associated computer also in communication with the data network. An advertising apparatus, in one aspect of the present invention, includes one or more engines. A user interface engine is configured to interact with the advertiser computer over the data network for generating a budget amount, marketing campaign parameters associated with and defining the marketing campaign, and information describing the marketing campaign. A campaign allocation engine is configured to allocate the budget amount among the electronic publishers based on the generated marketing campaign parameters and publisher parameters associated with the electronic publishers.