Headquartered in Wakefield, Mass., C-4 Analytics is a top-10 company on Deloitte’s 2014 Technology Fast 500, a fastest-growing private company on the Inc. 5000, a Bing Select Partner, a certified Google Premier Partner and the first agency to bring accountability to online marketing. C-4 Analytics delivers real, measurable results to its clients by using analytics to identify and track customer-acquisition channels — and the related costs — so that they can determine which marketing streams are most profitable. Learn more at http://www.c-4analytics.com.