Greg Mankiw points to a useful site that computes your coordinates on the political map after you take a quick online questionnaire. Greg comes out on the libertarian right. I am on the left, but surprisingly only barely (and quite a bit to the right of Gandhi). I am a comfortable distance away from Milton Friedman and Maggie Thatcher (not to mention Stalin and Hitler!).
Maybe every blogger should be required to disclose their political coordinates on their site. Caveat emptor.