The advertising board system maker said it didn't keep any personal information or record any videos.

广告牌系统的制造商称，广告牌没有保留任何个人信息或是录制任何视频。

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While there's no question that Google's giant data centers require vast amounts of power, the company's expertise is in information and online advertising, not generating electric power.

尽管谷歌庞大的数据中心需要大量电力来支持，这一点毫无疑问，但这家公司所擅长的是信息和在线广告，而不是发电。

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People wrongly think of attention information as beings useful only for advertising and marketing.

人们常常会误认为注意里信息只对市场和广告有用。

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For more information on advertising at the BBC, go to our dedicated pages.

BBC: Your guide to the BBC Embedded Media Player

The three companies: Gu Guo Information Technology, Shanghai Gou Xun Advertising and Google Information Technology, are all said to have been penalized by relevant authorities.

FORBES: Google's China Troubles Growing

By distributing the program, Google could also cash in on its core business of helping Internet users find information, selling advertising space on those search results.

FORBES: Google's Big Bet: Beyond Instant Messaging