I'm a Semantic Web researcher at the University of Maryland at College Park.
Since I already get a ton of spam, you might as well know that I've been known to read email sent to bparsia@isr.umd.edu.
I wear a number of different hats, both literally and metaphorically. Fortunately, they seem to go well with whatever else I'm wearing (or doing) at the moment. The hats basically come in two styles: Natty and tatty. Which translates into "Computer Science" and "Philosophy", more or less respectively, depending on my mood. "Computer Science", now a days, boils pretty much down to the Semantic Web, and "Philosophy" pretty much boils down to "Procrastination". A more detailed taxonomy of interests follows.
Most of my current work centers around Semantic Web Services, that mystical marriage of various sorts of making machines and their programs more comfy on he web. I'm a member of the DAML-S Coalition and the SWSI language committee. I'm primarily interesting in automating, to various degrees, Web Service composition.
I'm also very concerned with various socio-political aspects of the Semantic Web, including what aspects of our autonomy can be enhanced or diminished by having loads of autonomous software agents around and the difficulty of maintaining minority points of view in a world of formalized and shared conceptualizations.
What happens when Knowledge Representation hits the well? We don't really know. So, it might be nice to develop a theory of HyperKrep.
I've been arguing a fair bit about the so-called Social Meaning of RDF (and, presumably, OWL, et al). It really helps to get the philosophy right on this one. Ask Drew McDermott (well, not under this rubric); he seems to have sensible things to say.
Haven't done much late. Alas.