You've never heard of media analyst company Screen Digest. Keep that in mind when you stumble upon a few dozen news reports today that claim "Hulu ... a smaller upstart backed by News Corporation and NBC Universal ... is forecast to draw level with Google’s YouTube in US advertising revenues next year." Any reporter who reads that sentence in the Financial Times instantly wonders, "forecast by who?" By the Financial Times? By Hulu executives? No, by Screen Digest. Take that as you will.

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