16. A server computer, comprising: memory; a processor; and a program for composing a web page, wherein the program is stored in the memory and executed by the processor, the program including: instructions, which, when executed, transmit an authoring web page including an embedded authoring tool to a client computer of a publisher of the web page using a network, the authoring tool for composing the web page; and instructions, which, when executed, receive from the client computer web-page content corresponding to the composed web page, wherein the composed web page includes one or more advertisement regions that are placeholders designated for displaying one or more advertisements having one or more links to one or more content locations; wherein the composed web page is configured for display at run-time at respective clients of visitors who download the composed web page from a web page server; and wherein the one or more advertisement regions do not contain any of the web-page content.
16. A server computer, comprising: memory; a processor; and a program for composing a web page, wherein the program is stored in the memory and executed by the processor, the program including: instructions, which, when executed, transmit an authoring web page including an embedded authoring tool to a client computer of a publisher of the web page using a network, the authoring tool for composing the web page; and instructions, which, when executed, receive from the client computer web-page content corresponding to the composed web page, wherein the composed web page includes one or more advertisement regions that are placeholders designated for displaying one or more advertisements having one or more links to one or more content locations; wherein the composed web page is configured for display at run-time at respective clients of visitors who download the composed web page from a web page server; and wherein the one or more advertisement regions do not contain any of the web-page content. 23. The server computer of claim 16 , wherein the authoring tool includes instructions, which, when executed, place one or more instances of predefined structured fields in the composed web page, and place field content within the one or more instances of the predefined structured fields.