.P2PPeer to Peer intermediation search system for Electronic Commerce and varieties of advertising method using peer client program in Internet.

摘要

PURPOSE: An advertisement method is provided to form a network and to maintain an equivalent relation among the clients subscribing the network by using a peer-to-peer method and to perform an electronic commerce with other servers or cyber shopping mall. CONSTITUTION: An advertisement method comprises the steps of selecting an interest area at a purchase(501), searching for a purchase condition(502), comparing the search results(503), determining a purchase commodity and negotiating the price of the commodity(504), stopping the purchase step if the customer determines the purchase commodity but does not purchase it and assuring a commodity of a same kind in process if the customer determines the purchase commodity(505), determining if the customer participates in a cooperated purchase or not(506), and reserving the cooperated purchase if the customer participates in a cooperated purchase and ordering an individual purchase, otherwise(507).