May 10, 2010
the two most popular sources of keyword data
Currently, the two most popular sources of keyword data are Wordtracker , whose statistics come primarily from use of the meta-search engine Dogpile (which has ~1% of the share of searches performed online) and Overture (recently …
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the two most popular sources of keyword data
Filed under Wordtracker Trial by on May 10th, 2010. 
