$rss->add_module(prefix=>'my', uri=>'http://purl.org/my/rss/module/');

  $rss->add_item (title=>$title, link=>$link, my=>{ rating=>$rating });

##</code><code>##

    # Ad-hoc modules
	while ( my($url, $prefix) = each %{$self->{modules}} ) {
		next if $prefix =~ /^(dc|syn|taxo)$/;
		while ( my($el, $value) = each %{$self->{channel}->{$prefix}} ) {
			if ( exists( $rdf_resource_fields{ $url } ) and
				 exists( $rdf_resource_fields{ $url }{ $el }) )
			{
				$output .= qq!<$prefix:$el rdf:resource="! .
						   $self->encode($value) .
						   qq!" />\n!;
			}
			else {
				$output .= "<$prefix:$el>".  $self->encode($value) ."</$prefix:$el>\n";
			}
		}
  	}