Searchisms explores the "what" and "how" of Internet search.
Top 35 Most Profitable Keywords in AdSense system | Adsense Wisdom
Blogged on May 8th, 2007, 5:09 am | 1 year 8 months ago
"Expensive keyword" (high CPC) isn't equal to "profitable keyword" (high earnings) due to the low volume of traffic expensive (niche) keywords produce.
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