Whatever else it produced, P&G's recent social media "hackathon" (of sorts), it gave one blog maven a first-hand experience of the inherent challenge of marketing to your personal network:
The fact that P&G was willing to experiment publicly (especially in
the wake of recent backlashes, e.g. Motrin) is courageous. They took us
all right out there on the limb with them, but for some of us climbing
back down before we broke any of our personal network's branches, was
the only thing to do. ("Hey Buddy, Wanna Buy a T-shirt?": Notes from Inside P&G's Digital Marketing Hack-a-thon - Jory Des Jardins)
Let's hope all parties involved bear this lesson in mind when the ask consumers to "participate" in their social marketing campaigns...