In 2005, a small company began offering up a way to post amateur videos on the web. YouTube operated on a shoestring, with its founders maxing out credit cards, and debating what the company was really about. The next year, Google - sensing that YouTube would be a powerful force in search - acquired them. This week, author Mark Bergen tells the story of YouTube’s strange birth and breakneck path to success. Plus, the company’s epic battles against traditional media, and the culture clash that followed its acquisition by Google.