I represent Cambridge Semantics on the RDF WG. We develop and sell Semantic Web middleware, tools, applications, and solutions. We exploit the flexibility and expressivity of RDF in just about all elements of our software stacks. You can learn more about me at my bio on the Cambridge Semantics Web site.
On this working group, we are very interested in seeing TriG standardized for serializing RDF-with-named-graphs. I'm also interested in working on improving the RDF Primer.
I was the chair of the first SPARQL Working Group (the DAWG).
I was a member of the SWEO Interest Group.
I'm currently a co-chair of the second SPARQL Working Group.
I'm also currently a relatively passive member of the RDB2RDF Working Group.