Startups Stick with Organic vs Paid Search Results
Startup Professionals Musings
MARCH 23, 2013
Cost per click (CPC). For sites displaying the ads, this is called pay per click (PPC). For Google, this is pay per impression (PPI), or pay per mille (PPM) per thousand impressions. Cost per action (CPA). Another alternative was added a couple of years ago to mitigate the problem of people clicking just to get paid (click fraud).
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