The present invention is a method for using a computer connected to a network to match buyers and sellers, the method including: receiving a buyer request from a buyer, the buyer request including a request to purchase a good or service, having the computer search sites on the network for sell ads from sellers, each of the sell ads referring to an advertised good or advertised service, matching the buyer request with at least one of the sell ads, and notifying the associated seller for each matched sell ad that the buyer has requested a good or service similar to the advertised good or advertised service advertised in the matched sell ad. According to some embodiments of the method and system, both a seller and a buyer may be identified and matched up without either sending a request.