RDF/Topic Maps Interoperability Task Force

In his today's deviant chronicle, Edd Dumbill is wondering if the Semantic Web dreamers could not turn out to be right after all:
The topics of XML-oriented programming languages and the Semantic Web have been targets of mockery in their time, so this week I'm asking whether the true believers might be right.
And further on:
The unthinkable rapprochement between topic maps and RDF has occurred, signified by the formation of the W3C RDF/Topic Maps Interoperability Task Force. The task force is part of the Semantic Web Best Practices and Deployment Working Group. The last time I was with the majority of the people listed as members of the task force, it was in a very pleasant drinking establishment in Amsterdam. It's nice to think that the bonhomie of that evening has persisted into forming the basis of the task force.