` ::: I'm still trying to figure out what commonalities left-Libertarianism and Libertarian Socialism (etc) share with mainstream Libertarianism to justify the claim that they're ``variations intimately related to`` mainstream Libertarianism. They differ with regard to private property rights, the application of the Harm Principle, the desirability of State-enforced Positive Liberties, the need for a minimalist State and the importance of Negative Liberty. So, er ... what are these ``intimately related`` commonalities`` that BigK HeX speaks of?   `