The scheme pulled multiple Web sites advertising program delivery method, and ad networks, to deliver the same ad at the same time. And ensure the size in the delivery system often used by advertising programs available for small Web sites that collect a lot of small site less number of pages and number of access to the individual, as a whole, as one advertising media to sell to advertisers. You can get the advertising revenues in difficult small sites individually to ensure advertisers participating in the network. Can be set lower prices than major general, available at retail for the rates and out relationships, such as the amount of paper in leading site advertisement is difficult to advertisers, feel free to in the advertisement can benefit. However, small sites are often operated by an individual, the risk of undesirable content on ads for advertisers because the quality is.