When people enter and click ads, you are getting paid.

当人们进入并点击广告，你可以获得付款。

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If you are selling banner ads online, as an example, and that industry tanks, you'd be better off switching to a job selling pay per click ads early.

例如，假设你的工作是在网上销售商标广告，那么由于这个行业的没落，你最好趁早改行去销售点击付费的广告。

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By watching what people search for, click on and say online, companies can aim "behavioural" ads at those most likely to buy.

通过观察人们在网上搜索、点击和发言的内容，公司可以将“行为性”广告瞄准那些最有可能购买的人。

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That ad spending was narrowly targeted, mostly invested in pay-per-click ads on sites like Google and Yahoo.

FORBES: Magazine Article

For example, if you spend more money on pay-per-click ads today, how much revenue will come next quarter?

FORBES: The CEO's New Secret Weapon: The Chief Revenue Officer

For Google, whose revenue mainly comes from pay-per-click ads, a focus on in-stream ads would be a new tactic.

FORBES: Magazine Article