There is a problem using keywords to categorize content on the broader scope of the internet – the first is that many items cannot be put into neat categories.

然而，要是在更为广阔的互联网范围内使用关键词来对进行资讯分类的话，这种做法会产生一个问题：首先，很多资讯是没有办法被简单地分类的。

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As with most things Internet marketing, keywords are critical.

正如因特网上销售的大部分东西一样，关键词是最重要的。

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By putting in keywords to monitor - like your organizations name - Google alerts will email you whenever that term is used on the Internet.

你可以把关键词(例如你们组织的名称)放进监测器内，一旦这些词在网络上出现，google alter就会给你发邮件。

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In addition, the government blacklists select overseas websites, including Facebook and Youtube, and use Web-filtering technology to sporadically interrupt Internet traffic that includes sensitive keywords.

WSJ: U.S. Steps Up Web Freedom Efforts

This traffic growth, however, requires a significant outlay in online brand marketing: Fees (principally through the purchase of travel-related keywords) to Internet search engines like Google ( GOOG) and Yahoo!

FORBES: Connect

It says investigators can "request the entire database" of Internet traffic "in real time" by entering keywords, email addresses or the names of file attachments as search queries.

WSJ: Foreign Firms Helped Gadhafi Spy on Libyans