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That's what the addition by subtraction equals when you compare comScore's 10.8 billion unique video streams counted in June to Nielsen's 7.5 billion — because of the two Web usage statistic compilers, Nielsen refuses to count "pornography" and "advertising" in the company's total. At first I though, "There's a difference between porn and ads?" And then I remembered: I generally like porn and I usually hate ads. No wonder it's so hard to chose between loving and hating American Apparel. [Silicon Alley Insider]