Abstract: The present teaching relates to online advertising based on dynamic advertisement placement. In one example, a request for providing an advertisement to a user is received. A request for an advertisement to be presented to a user is received. The request is received with information associated with a plurality of advertisement placements. Information related to the user is obtained. From the plurality of advertisement placements, at least one advertisement placement is selected based, at least in part, on the information related to the user. Each of one or more parties is requested to provide a response with respect to the selected at least one advertisement placement. At least one response is associated with an advertisement to be presented to the user. Information associated with the advertisement is transmitted in response to the request.