This document outlines the process for justifying social media investments using ROI analysis. It discusses how social media requires an allocation of limited resources like people, technology and time. It then walks through the steps to prove that social media is generating cost reductions or revenue increases, including establishing a baseline, creating activity timelines, measuring sales and transactions, identifying patterns between social media activities and business metrics, and ultimately calculating ROI. The key message is that ROI is about tying social media to actual business performance, not just measuring impressions and engagement.