The essential principle is a simple one: "Anyone can contribute." Today's work mindset is still such that early drafts and ideas in the rough are kept hidden and not shared until far too much work is already done before input is requested. As we've learned with agile software, course corrections are much easier and more effective when done early and often. This is where agility and social business have much in common. In the end, being in frequent (some would say constant) contact with ones stakeholders makes for a highly aligned, mutually well understood, and jointly accepted work product. The activity streams of social media, when integrated in the flow of work, ensure that this is the case.
The Social Business Index | Dachis Group
Social Business By Design | Amazon Hardcover (John Wiley & Sons, 2012)