This document discusses electronic word of mouth (eWoM) and its evolution from traditional word of mouth communication. It defines eWoM as any positive or negative statement made about a product or company available online. The presentation covers the key elements of eWoM content, different types of influencers, and case studies of both positive and negative eWoM examples from companies like Starbucks, McDonalds, and Whole Foods. It also discusses how eWoM can go viral and how companies can build communities through engaging content that motivates sharing.