I retook the Political Compass questionnaire tonight, and scored fairly libertarian: 7.38 on the economic left/right axis, and -2.92 on the social libertarian/authoritarian axis.
Like others, I have problems with the test. Among other things, some of the questions seem to presume that if one holds that a given practice or activity is immoral or unethical, it is appropriate for the state to intervene. Yet I reject this view. There are activities, both economic and social, that I believe to be wrong, yet should remain perfectly legal. Therefore, I question the relevance of questions about one's moral views in a test that purports to measure one's political views.