The document provides guidance on calculating social media return on investment (ROI) using benchmarks from traditional marketing campaigns. It outlines a basic 3-step process: 1) establish social media goals and key performance indicators; 2) define measures of success, costs, and results; 3) calculate ROI by comparing costs to results. Three examples are provided comparing traditional marketing like billboards, customer service phone lines, and reseller programs with their social media equivalents on Facebook, Twitter, and YouTube. The examples show how to quantify social media performance based on metrics like likes, sentiment, views, and sales.