31. A server computer system, comprising: memory; one or more processors; and a program for composing a web page, wherein the program is stored in the memory for execution by the one or more processors, 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; 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.
31. A server computer system, comprising: memory; one or more processors; and a program for composing a web page, wherein the program is stored in the memory for execution by the one or more processors, 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; 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. 48. The server computer system of claim 31 , further comprising instructions, which, when executed, respond to a request for the composed web page by dynamically generating hypertext markup language (HTML) using the web-page content.