This document discusses engagement in online and new media marketing. It defines engagement as getting people to talk about a product or brand and interact directly by commenting or attending events. Engagement is important for several reasons like increasing sales and understanding customer wants. Key metrics for measuring engagement include time on site, social media following growth, response to content, referrals and shares. The document provides examples for calculating engagement rates from social media posts and comparing rates over time. It also discusses factors that can undermine engagement.