This document discusses how emotion and physiological arousal affect sharing content online. It notes that positive emotions like awe and excitement tend to promote more sharing of high arousal content. Berger's framework shows high arousal positive emotions and low arousal negative emotions are most shareable. The document also discusses how short-form writing and narratives on social media can elicit emotional responses through techniques like frontloading important words, using lists, intrigue, and serialization over multiple posts. Students are asked to analyze examples of viral content, discuss which emotions are less sharable, and create a 10-part short-form narrative to share with the class.