This document discusses the evolution of social media from isolated online interactions to networked communities. It defines key social media concepts like memes, networks, and different types of online media tools. The rest of the document provides guidance on developing a social media strategy, including setting goals, identifying audiences, selecting appropriate tools, implementing a strategic plan, and evaluating impact. The overall message is that social media has transformed how people connect and share information online through various platforms and must be approached strategically to achieve desired outcomes.