I was intrigued by the title, since I've been dealing with compliance issues of late. Actionable would be content that would require prosecution or termination in that context.

Sounds like your references want to find the point at which content triggers action (or transactions) of a monetary kind. While they can generally, or losely, define a transaction as the transfer of information rather than funds; I think the definitive point in eCommerce is when the transaction results in the transfer of lucre.

On an altruistic basis, exchange and transfer of information is nice to have. There is no motivating force behind it other than the desire for information and the desire to share. Both of those desires are enhanced when there is a profit potential involved.

So, from a regulatory perspective, how much of the activity that leads up to the final, monetary transaction is directly connected. How much of that activity must be captured, or should be captured? Is the final transaction, the purchase, the thing? Or is the search, the stumbling around, blind alleys and wild geese all part and parcel to the package?

And, how much do we want to be held accountable for that information?