Experts Agree: YouTube Dominates. But By How Much?

Each month we hear about how much share of the online video market YouTube (GOOG) has hoovered up. But each month we also get two different pictures of YouTube's dominance: One from Nielsen and one from comScore (SCOR). When comScore releases its Video Metrix figures for June next week, it will put YouTube at 39% of the video market. It says YouTube accounted for 4.2 billion out of 10.8 billion...