20. A non-transitory computer readable storage medium storing one or more programs, for composing a web page, for execution by one or more processors on a server, the one or more programs comprising: 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; and wherein the composed web page is configured for display at run-time at respective clients devices that download the composed web page from a web page server.
20. A non-transitory computer readable storage medium storing one or more programs, for composing a web page, for execution by one or more processors on a server, the one or more programs comprising: 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; and wherein the composed web page is configured for display at run-time at respective clients devices that download the composed web page from a web page server. 21. The non-transitory computer readable storage medium of claim 20 , 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.