Twitter, which is closely held, declined to specify its ad revenue.

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Viewers, and the ad industry, will watch closely to see if Gildan joins the ranks of successful advertisers or stumbles in its first (and then potentially only) ad attempt.

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There wasn't a lot of room for messy, ad hoc assumptions to make the model more closely fit the facts.

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In November one of the world's biggest banks kicked off a major ad campaign in Asia, touting its ability to work closely with its richest clients.

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After all, just ahead was a presumably closely contested U.S. election, then the fiscal cliff and the debt ceiling, ad nauseam.

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