This document discusses tools and metrics for measuring social media. It outlines different types of social media like social news, social sharing, and social networking. It then discusses measuring engagement across stages from involvement to influence. These stages include involvement where a customer first interacts, interaction where they participate more, intimacy where they share opinions, and influence where they advocate for a brand. The document stresses measuring engagement across websites, social channels, and offline to gain actionable insights and determine key performance indicators for social media strategy.