A method for supporting the selection of communication peers in an overlay network, wherein a multitude of communication peers participate in said overlay network by providing certain pieces of information, and wherein at least one peer- to-peer server - tracker - is provided that maintains a database of said participating communication peers and the information possessed by them, wherein said tracker, upon receiving a query regarding a specific piece of information from a communication peer - requesting client -, answers said query by providing said requesting client a list that includes a subset of all communication peers possessing said requested piece of information, is characterized in that a network entity is provided being located such that it receives messages directed from said requesting client to said tracker, wherein said network entity stamps topological location information of said requesting client into any of said messages directed from said requesting client to said tracker. Furthermore, a corresponding system is disclosed.