《华尔街日报》指出在这之间存有百余个中间商，其中包括跟踪公司、数据代理和广告网络，他们竞相提供大量的关于个人行为与兴趣的数据，以满足日益增长的需求。
The Journal identified more than 100 middlemen - tracking companies, data brokers and advertising networks - competing to meet the growing demand for data on individual behavior and interests.
一些媒体公司通过不卖给中间商实时竞价或其他部分广告来做出应答。
Some media firms have responded by selling fewer ads through middlemen, in real time or otherwise.
通常人们较为注重面向旅游者的直接渠道旅游广告，而往往忽视旅游中间商与旅游产品生产商之间的间接渠道旅游广告。
People always pay much attention to advertising in the direct channel to the end user, but neglect advertising between tourism suppliers and intermediaries in the indirect marketing channel.
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