1. An article of manufacture comprising: a machine-readable medium; and instructions carried by the medium and operable to cause a programmable processor to perform: receiving a query; obtaining behavioral targeting scores of a plurality of first buddy nodes of a node corresponding to the query; updating the behavioral targeting scores of the plurality of first buddy nodes based on behavioral targeting score of at least one second buddy node of each first buddy node; forwarding the query to at least one first buddy node based on the updated behavioral targeting scores; obtaining a response associated with the query; and electronically providing the response to a user of the node.