ツイッターが徐々にビジネス・プランを打ち出す

And Promoted Tweets looks like the only one with potential to scale into something really big on its own–big enough to justify the lofty valuation Twitter landed when it raised that big pile of money last year.

But if you’re a Twitter booster, you have to feel good about that list of experiments. Twitter doesn’t need all of them to be huge successes–it has enough scale that even a bunch of moderate successes will translate into big numbers.

And in a worst-case scenario, where they all fail, the Twitter dudes can cross those efforts off and move on to something else. That’s what start-ups are supposed to do.
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