Mark W Schaefer - Hidden Value in Social Media

I've been following Mark's Schaefer's work for a while now. His blog, {grow}, is engaging as well as a great source of information for marketing and social media. In this discussion, we start with the current value of using Twitter and how it has changed over time. We end with a discussion on measuring real value, the true value of social media, within a business context. About Mark: Blog: http://www.businessesgrow.com/blog/ The Toa of Twitter: http://www.businessesgrow.com/us/ Return on Influence: http://www.returnoninfluence.com/