http://www.xn--8ws00zhy3a.com/blog/2006/05/sniffing-out-rss/nonstdprefix.rdf RDF prefix test http://www.xn--8ws00zhy3a.com/blog/2006/05/sniffing-out-rss/nonstdprefix.html This is an RSS 1.0 feed using a non-standard namespace prefix for RDF elements.