In my opinion the Founders were the true libertarians. I thought Kevin's OP was brilliant, well designed, and provided lots of thoughtful ammunition for a good discussion.
The only quarrel I would have with it--and indeed we may have no difference of opinion at all but I'll let him speak for himself--was on the concept of what Libertarians would not favor.
Example: Libertarians would not support school vouchers. (I do agree with this. The Federal government has no business in the education of the people.)
But Libertarians would push for privatized education? Here he and I part company just a tad. I have no problem with social contract in which parents, teachers, school boards, etc. agree on what sort of education the children will receive and mutually agree to pool resources to form a school district to allow that to happen. And to elect a governing authority to set reasonable policy and see that the process is implemented to meet mutual goals. But this must be done at the local level or at most at the state level. It should never be a federal function to either fund or dictate policy.
To me, true libertarianism is the concept that our rights must be recognized and secured--that is the federal governments job--but then we all are completely free to form whatever sort of society we wish to have at the state and local level.
To deny freedom to choose one way of life/community cooperaton is just as coercive as dictating what sort of life or community the people are expected to have
"Liberals", Foxy, not libertarians.
Libertarians are like liberals without a net.