A merchant server of a first merchant receives an indication of items that a customer is to purchase via a web site. The indication may be, for example, a signal indicating that the customer is ready to “check out” his shopping cart of items on the web site. In response, the merchant server provides...http://www.google.de/patents/US20060218049?utm_source=gb-gplus-sharePatent US20060218049 - METHOD AND APPARATUS FOR FACILITATING ELECTRONIC COMMERCE THROUGH PROVIDING CROSS-BENEFITS DURING A TRANSACTION
