This system includes a changer data base, in which a changer registers his or her own new address, relationally storing a new address disclosing condition for an inquirer who wishes to know the new address of the changer, a disclosure judge judging whether to disclose the new address to the inquirer...http://www.google.de/patents/US7543025?utm_source=gb-gplus-sharePatent US7543025 - Address inquiry system, computer software product, and address inquiry method
