While looking for tech spots that focus on SN I came across Jeremiah Owyang
in the SF Bay Area. Owyang is a Sr Analyst at Forrester Research on Social Computing. These web strategy reviews and blogs are excellent reading and will serve you well in helping establish a SN strategy. Check out the posting of reports that obviously come from actual research, so it's possible that you are getting nuggets of information that might otherwise cost thousands of dollars. As well, apparently when Jeremiah contacts people for lunch, they call back. 'nuff said.