虽然任何引起公众注意的互联网服务都受益于公众的口耳相传，但是并非所有令消费者信服的互联网服务都具备实施病毒式营销的特性。
While any compelling Internet service can benefit from word of mouth exposure, not every compelling consumer Internet service possesses the proper characteristics to rely on viral distribution.
其实，如果一个互联网应用不采用病毒式营销方式推广自己，那么自然搜索方式应该是不二之选了。 因为自然搜索方式同样可以在毫无成本支出的情况下让网站得到最大程度的曝光。
Natural search is a vitally important distribution option for Internet services that can’t rely on viral distribution because it can provide the same kind of massive consumer exposure at no cost.
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