Definition of Negative Keywords
Negative keywords are used in keyword advertising to prevent ads from being shown when the search terms contain the negative keywords. For instance, a realtor who sells houses in Omaha could specify "commercial" as a negative keyword so that their ads do show for searches upon "Omaha real estate" but not "Omaha commercial real estate".
Negative keywords can have a tremendous impact on ROAS by significantly reducing the number of clicks by poor quality leads.
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