definitely
As grad-students and post-docs we Science folks work under a principle investigator, in his/hers lab, and we're not independent as post-docs in the Humanities. It make perfect sense that a post-doc in the Humanities will have a personal professional web page, but for a post-doc in Sciences, I think that having a private professional page apart from the small entry you get on your lab's page or on consortiums you're on, etc., is a little pathetic.