Click Fraud Conversion Rate CPC PR ROI 
WebMarketCentral
SEPTEMBER 14, 2007
MarketingSherpa recently published its Search Marketing Benchmark Guide for 2008 , providing data on cost per click (CPC), conversion rates, SEO and other key online marketing metrics. Marketers rate SEO second and search engine marketing (PPC) ads third in terms of ROI, behind only house-list email marketing.
WebMarketCentral
JANUARY 22, 2008
A well-crafted search marketing program can provide not only broad brand exposure at a very reasonable cost (with CPMs of $10 or less), but also high-ROI lead generation. In the words of the author, "You need to set three key metrics on the way to managing by revenue: required margin per sale; close and conversion rates; and affordable CPC.
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