The company's ClearMark system offers a quality score for each ad event, helping customers to increase conversions, improve traffic sources, eliminate fraud, and maximize advertiser ROI. ClearMark for Traffic uses various methods to determine the quality score of each click or impression, while ClearMark for Sites scores websites and referrer URLs to differentiate between high and low-quality traffic sources. Despite a decline in industry-wide CPCs, Anchor's customers have seen an 11% increase in average CPCs since using ClearMark. Anchor Intelligence was acquired by Comscore in March 2011.