YouTube is now showing approximately 3 billion videos a day. A growing proportion of those are shown with ads—more than 2 billion a week —and YouTube as a business is expected to pass $1 billion in revenue next year. But when it comes to making money, some videos do better than others. For YouTube, it is all about scale, and networks of loosely aligned online video producers scale better than individual shows and viral-video phenoms. In fact, there is a brand new department inside YouTube called Networks that reports to global head of content Dean Gilbert . The purpose of the department is encourage the formation of these outside networks which then use YouTube as their distribution channel.