xml.rss('version' => '2.0') do
  xml.channel do 
    xml.title(TWCONFIG['site_name'])
    xml.link(@request.protocol + @request.host_with_port + url_for(:rss => nil))
    xml.description(page_title)
    @posts.each { |p|
      xml.item do 
        xml.title(p.topic.subject)
        xml.link(@request.protocol + @request.host_with_port + url_for(:controller => "forum", :action => "postshow", :id => p.id))
        xml.pubDate(CGI.rfc1123_date p.updated_at)
      end
    }
  end
end