Though he'd probably be horrified to learn this, Huntsman's idea is an evolution of an idea implemented quite actively in the 2008 Mitt Romney campaign -- the "Five Brothers Blog", which was put out by his five sons. And as you suggest, "Five Brothers" was full of insider color (if not scoop), and in fact was written by the brothers themselves, not a campaign staffer. The difference in this opportunity, though, is the range of media available to them (not to mention that the Huntsman daughters look a whole lot better on camera). Last campaign cycle, Twitter and Facebook were in their relative infancy as campaign communications tools, and YouTube was mostly used for official purposes; what a difference four years makes!