Negative keywords are a core component of a successful keyword list. Adding a negative keyword to your ad group or campaign means that your ads won’t show for search queries containing that term. By filtering out unwanted impressions, negative keywords can help you reach the most appropriate prospects, reduce your cost-per-click (CPC), and increase your ROI.
– Courtesy of Google
Negative keywords are crucial to reaching your target audience. BottomLine can supply your business with search query reports to better understand who is visiting your site and where your marketing dollars are being spent.