28. The system of claim 24 , where the representation of the second and third web pages is automatically included in the first web page without requiring the first author to perform an additional action to update the first web page after the operations of determining that the second web page includes a reference to the content created by the first author, and determining that the third web page includes a reference to the content created by the first author.
28. The system of claim 24 , where the representation of the second and third web pages is automatically included in the first web page without requiring the first author to perform an additional action to update the first web page after the operations of determining that the second web page includes a reference to the content created by the first author, and determining that the third web page includes a reference to the content created by the first author. 31. The system of claim 28 , where the representation appears in the first web page at the client computer as a button that serves as a representation for a plurality of web pages, including both the second web page and the third web page, where the button can be selected by the user while the first web page is displayed within a web browser window at the client computer, where selection of the button causes a web page that includes commentary by the third author to be displayed at the client computer, and where the commentary expresses the third author's approval of the content created by the first author.