Portland, Oregon-based WebTrends Inc., a provider of Web analytics and marketing performance management, revealed Wednesday that the nation's largest publisher of free consumer guides will utilize WebTrends' On Demand software-as-a-service. WebTrends said Consumer Source Inc. selected WebTrends' hosted analytics solution to measure and improve the publisher's online marketing initiatives. Consumer Source will use the WebTrends software to better manage its relationships with advertisers. WebTrends also said Consumer Source will use its products to evaluate the publisher's search-engine optimization and search-engine marketing campaigns. Based in Norcross, Ga., Consumer Source is a wholly owned subsidiary of PRIMEDIA Inc.