I'm looking for any in-depth studies of libertarian theories of non-contractual detrimental reliance. For example, suppose you ask me what I think about a certain product and I tell you (or perhaps I do reviews for a living) but after buying the product (which turns out to be nothing like I described), you discover that I was biased by receiving a free sample to review or special kickbacks because you mentioned me in the "how did you hear about us?" section of a survey.
I think generally we have an intuition as libertarians of some form of caveat emptor and that just saying something to someone (that they have the freedom) to ignore, can't carry any weight as far as restitution if a contract wasn't involved, e.g. if the offending party is a third-party. But I'd like to know if there are any careful examinations of this "obvious" principle that I can refer to in fleshing out some ideas.
FYI, this came up in think about the FTC's new regulation requiring bloggers to mention (or else be fined) if they received a sample product from a manufacturer if they post a review of that product. The thinking, I suppose, is that you have to protect the consumer that may trust and rely on the review from bribery and bias as regards the reviewer. This seems like obviously wrongheaded paternalism but I want to say something more than that. But before I do, I'd like to know what's already been said. There seems to be reams on contractual stuff but not much on this sort of indirect wronging by omission. The whole thing from the FTC seems to imply some sort of "right to information" and I guess just pointing out the lack of such a right might be the best start. Even though I think it likely a moral issue to withhold that kind of information, the good of it doesn't seem to be a form of aggression despite the property effects (you go out and trade money for goods based on your reliance on the information).
If you have any ideas of some or interesting angles on this scenario, I'd love to hear them. Also, if you don't share the intuition that this is wrongheaded policy (statism aside), I'd like to hear those arguments too.

