摘要：
Billions of dollars are flowing into online advertising. But marketers also are confronting an uncomfortable reality: rampant fraud.rampant：猖獗的，狂暴的 About 36% of all Web traffic is considered fake, the product of computers hijacked by viruses and programmed to visit sites, according to estimates c... 阅读全文
posted @ 2014-04-11 09:58
微雪
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