6. A system according to claim 4 , wherein the processor is further adapted to rank each peer system associated with each node in the ontology.
4. A system comprising: a classification application stored in memory; and a processor communicating with the memory, the processor adapted to: providing an ontology that represents a hierarchical organization of a plurality of nodes, wherein each node of the plurality of nodes corresponds to one class of a plurality of classes; associate each peer system of a plurality of peer systems with at least one of the plurality of nodes in the ontology based on information maintained on each peer system and a class of the plurality of classes to which the information corresponds; receive a request including a select class of the plurality of classes from a first peer system of the plurality of peer systems; identify a select node of the plurality of nodes based on the select class; identify at least one peer system of the plurality of peer systems that is associated with the select node; and send to the first peer system identification information identifying the at least one peer system and identifying a date and a time of when the at least one peer system was associated with the ontology.