Andy Crestodina is the co-founder and Chief Marketing Officer of Orbit Media, an award-winning 50-person digital agency in Chicago. Over the past 20 years, Crestodina has provided digital marketing advice to 1000+ businesses. He speaks at national marketing conferences and writes for big marketing blogs. He's also the author of "Content Chemistry: The Illustrated Handbook for Content Marketing". Crestodina has written 500+ articles on content strategy, search engine optimization, influencer marketing, visitor psychology and Analytics. These articles are read by more than a million people each year. His videos have half a million views. His book, "Content Chemistry," isn't quite as popular. It's sold around 4,000 copies. But it's good.