A system and a method to exchange digital items among peers of computer networks. The items may comprise, without limitation, files, CP, BW, storing space, money, licenses, contracts, information and any other shareable resource of peers on a computer networks. The system and method may offer the item, bid, transfer and pay for the item. A buyer of the item may become a potential seller of it. The creator of the item may receive a percentage of the payment for any transfer of the item.