http://unintentional-irony.blogspot.com/2008/02/corporate-libertarians.html

Anyone can call themselves a libertarian. Still, the most annoying ones are those who fail to understand that the limited liability corporation is a profoundly privileged beast, one whose existence weakens such things as the individual right-to-contract, and individual property rights in general. I will stipulate at the outset that I think the corporation is a very powerful and useful invention, but it does require certain sorts of regulation if it isn’t to seriously harm individual rights, and often corporate libertarians seem more interested in eliminating those essential regulations than upholding the underlying individual rights.

Google the term, for one that’s “undefined” it’s all over the net. You may also have heard of it referred to as “vulgar libertarianism”.

http://rationalwiki.org/wiki/Vulgar_libertarianism

Vulgar libertarian apologists for capitalism use the term “free market” in an equivocal sense: they seem to have trouble remembering, from one moment to the next, whether they’re defending actually existing capitalism or free market principles. So we get the standard boilerplate article arguing that the rich can’t get rich at the expense of the poor, because “that’s not how the free market works” — implicitly assuming that this is a free market. When prodded, they’ll grudgingly admit that the present system is not a free market, and that it includes a lot of state intervention on behalf of the rich. But as soon as they think they can get away with it, they go right back to defending the wealth of existing corporations on the basis of “free market principles.