Feed your site with RSS and Atom

Feed your site with RSS and Atom: "For modern Web 2.0 sites, the ability to mash up information from different sources is a plus. You can use Google Web Toolkit (GWT) to get and process XML-based news feeds such as RSS and the more modern Atom Syndication Format. In this article, explore methods to access any appropriate feed—despite same-origin policy (SOP) limitations—and to process the incoming XML data."