| 主权项 |
1. A method of delivering information across a computer network, comprising:
receiving, at a web server, a first request from a client program for user-selected information; determining, at the web server, if a provider-selected message has been previously transmitted to the client program within a first time period determined by the web server; receiving, at the web server, a second request for user-selected information after the first time period determined by the web server; determining, at the web server, that a second provider-selected message has not been previously transmitted to the client program within a second time period determined by the web server, the second time period different from the first time period, the second provider-selected message comprising an HTML document having a link associated with the user-selected information; transmitting, from the web server, the second provider-selected message to the client program for display, the second provider-selected message being configured to cause the client program to transmit a third request for the user-selected information; receiving, at the web server, the third request; and transmitting, from the web server based on a determination that the third request originated from the second provider-selected message and comprises a request including a referrer header having the address of the provider-selected message, the user-selected message to the client program for display. |
