This document discusses approaches for measuring social media return on investment (ROI). It outlines a 4-step model for determining social ROI: 1) segmenting and targeting audiences, 2) setting expectations based on industry, 3) determining key performance indicators to measure returns, and 4) using measurement approaches like attribution of online conversions, engagement/advocacy metrics, and analyzing awareness/affinity through sentiment. The document provides examples for each approach and estimates potential ROI values. It emphasizes the importance of optimization and governance for social media measurement and ROI.