At the company I work for, the term is "click" (since it is more universal across different mediums, including web pages, email, etc.), and is differentiated in the same manner as Wil stated..."good" versus "bad" clicks..."good" meaning that revenue is generated from the "click" versus simply "viewing" of something with no revenue generated.
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Buh Bye!
Cheers,
Me
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Buh Bye!
Cheers,
Me