If you are using the web services means my suggestion is, after the page has finished loading you would call the WebService’s WebMethod to get a new article, when you get the article you could use JavaScript and the DOM to show it in the page.
Have a look on the below links,
http://www.asp.net/ajax/documentation/live/tutorials/ExposingWebServicesToAJAXTutorial.aspx
http://www.asp.net/ajax/documentation/live/tutorials/ConsumingWebServicesWithAJAXTutorial.aspx