It’s potentially important because budgets on entertainment content have not, by and large, switched to the Internet or streaming as quickly as people may have guessed. Any content creator on YouTube can speak plainly to that reality. Even so, YouTube is already a major driver of ads. According to Next TV, the video publishing platform grossed more than $6B in ad revenue in the first quarter of this year. Long-term, if the service is able to pull away more ad dollars that would have gone to traditional television networks, that number could climb exponentially.