Research says that 85% of people will make a purchase after reading online reviews about a product or service. This has had huge implications for the hotel industry and helps explain why TripAdvisor, a massive repository of user-generated reviews, was the most-visited travel website in the world in 2013. Harvard Business School professor Thales Teixeira discusses TripAdvisor’s staggering success, how the company has forced an entire industry to change the way it considers (and purposefully influences) the online review process, and how consumers navigate that sea of reviews.