Although some magazines will maintain national audiences, a large number of magazines will entertain narrower audiences.

尽管一些杂志面向的是全国读者，但大部分杂志的受众依然较小。

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Crowdsourcing works when there are large audiences buying into a product they value.

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In other words, Facebook offers a greenfield of new audiences, with an overall reach large enough that they can target narrowly and still reach millions of people.

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In fact, audiences both large and small thrive on direct interaction with a speaker.

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