Patent ID: 8429014

Claim:
A method for receiving advertisement information from advertisers, the method implemented by a server system and comprising: sending, through a communication interface, a multi-level representation of at least a portion of a hierarchy of content nodes to a plurality of advertiser user systems to facilitate selection of one or more of the content nodes, each content node associated with at least one content topic, wherein each respective content node comprises a plurality of web pages from different web sites; receiving, through the communication interface, advertisement listing information comprising a plurality of bids associated with an advertisement, the advertisement associated with one or more content topics, each bid associated with at least one content node of the hierarchy of content nodes that is associated with at least one of the one or more content topics; and serving, using one or more data processors, the advertisement, for each content node, based on the bid associated with the respective content node relative to other bids associated with other advertisements for the respective content node for placement on the web pages of the respective content node.