This is the RDF needed for trackback support (and like I said, rel=trackback exists as well):<p><pre><code>    &lt;!--
        &lt;rdf:RDF xmlns:rdf=&quot;http:&#x2F;&#x2F;www.w3.org&#x2F;1999&#x2F;02&#x2F;22-rdf-syntax-ns#&quot;
                 xmlns:trackback=&quot;http:&#x2F;&#x2F;madskills.com&#x2F;public&#x2F;xml&#x2F;rss&#x2F;module&#x2F;trackback&#x2F;&quot;
                 xmlns:dc=&quot;http:&#x2F;&#x2F;purl.org&#x2F;dc&#x2F;elements&#x2F;1.1&#x2F;&quot;&gt;
        &lt;rdf:Description
                 rdf:about=&quot;https:&#x2F;&#x2F;www.onli-blogging.de&#x2F;feeds&#x2F;ei_1522.rdf&quot;
                 trackback:ping=&quot;https:&#x2F;&#x2F;www.onli-blogging.de&#x2F;comment.php?type=trackback&amp;amp;entry_id=1522&quot;
                 dc:title=&quot;Medieval II: Total War&quot;
                 dc:identifier=&quot;https:&#x2F;&#x2F;www.onli-blogging.de&#x2F;1522&#x2F;Medieval-II-Total-War.html&quot; &#x2F;&gt;
        &lt;&#x2F;rdf:RDF&gt;
    --&gt;
</code></pre>
How is that complicated? Where is the link to or the problem with semantics?