A system for advertising to an end user in a computer network is provided. The system includes a server configured to transmit instructions to a client application to display an advertisement and a call-to-action for a reward in proximity to each other. The system is further configured to receive a response...http://www.google.com.tw/patents/US7756962?utm_source=gb-gplus-share專利 US7756962 - System and method for advertising on a network
