Online influencers are an increasingly important way for companies to find new customers and drive sales. Whether you're a marketer who wants to more effectively use social media or a consumer targeted by influencer content - in good ways and bad - you'll benefit from better understanding how the industry works. Emily Hund, researcher at the University of Pennsylvania, explains that it was born from not only increased connectivity but also Great Recession job cuts which forced people in creative fields to innovate. She argues that these are entrepreneurs who now have an impact on many different sectors of the economy and offers advice for both them and the brands wanting to develop better influencer marketing strategies. Hund is the author of the book The Influencer Industry: The Quest for Authenticity on Social Media.