This document provides summaries of 10 social media success stories and campaigns. It discusses how Mountain Dew engaged fans to create and vote on new soda flavors through its DEWmocracy campaign. It also describes how Netflix held a contest that improved its movie recommendation algorithm, saving the company money. Additionally, it outlines how the YouTube Symphony Orchestra brought together online talent and how the Imperial War Museum used Twitter to retell the Battle of Britain minute-by-minute in real time.