When Louis-Philippe Morency was teaching his first course in analyzing human behavior at University of Southern California, he was scrounging to find good videos of people talking to each other and expressing their opinions. Then he had a lightbulb moment: YouTube. Suddenly “millions of examples” of individuals opining on topics ranging from beauty creams to baseball were available to analyze–for free. Forget stilted focus-group sessions. “What is really amazing is all these people are talking straight to the camera with limited background noise and describing how they feel and what they like,” he explains. Read the full story at Fast Company.