I had the opportunity to speak with Jean Burgess and Joshua Green about their new book, called YouTube: Online Video and Participatory Culture. They completed a large-scale content survey of certain categories on YouTube that might be seen as "the most popular." Here, they talk a bit about what they found and whether or not prior assumptions that have been reported about YouTube's content lined up to the videos they examined in their sample. Please note that this is a research site and that comments posted to the site may be used in research. For more information about the study and how posted comments are used in research please see: http://www.youtube.com/user/AnthroVlog Less