There’s a lot going on discussing social media ROI. Mainly if there’s a way to measure it.
I’ve found Alexandra Samuel’s post really interesting. I witness every day cases of Google Analytics paranoia, and I’ve to admit I’m not immune too. So, IMHO, Alexandra’s suggestions are a good starting point.
I’ve tried to put on paper (e-paper) my own starting point and this is what came out.
It is not a ROI model but, I think a starting point. Measuring how (speed and direction) we move toward the Hurray! spot in the middle of the diagram could start our ROI measurement exercise, keeping us on a focused and actionable plan.
P.S.: forgive my hand writing 
