Hearst uses Omniture to test how its readers click on Web stories.

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To join a Trada-led campaign, a search expert must first pass an aptitude test on pay-per-click advertising.

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On Click, we like to put theories to the test, no matter how persuasive they appear at face value.

BBC: Click listeners test 'filter bubble'

So if one customer unsubscribes to a test email, you should effectively deduct ten click-throughs from your internal scoring.

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In the first test, Pickens was presented with a series of nouns and had to click a "yes" or "no" button to indicate whether he thought they were living or nonliving things.

FORBES: Inside T. Boone Pickens' Brain