UPDATED, 01/25/06
Some relevant reading:
Natural Rights: Useful Fiction, by John Henke at QandO NEW
Government: The Social Contract Market, by Jon Henke at QandO
Rights Schmights, by Max Borders at TCS Daily
The Right in My Garage, by Jon Henke at QandO
The Paradox of Libertarianism, A Footnote to My Theory of Rights, and The Origin and Essence of Rights, by moi