Apparently there is some good-looking economist with a name quite similar to mine, but his middle initial is M (whereas mine is P). It seems he is a stooge for the oil companies though.
(Incidentally I have no idea why they got the middle initial wrong. It's correct at IER's website.)
UPDATE: They have since caught their mistake. Now they list me as Robert P. Murphy. But there is still a trace (as of the night of 2/12) of their original goof; the tags for their post include "robert m murphy". These sloppy folks wouldn't last a day on BP's payroll.