"Marketers are still struggling to generate and to prove sales results in an increasingly omnichannel world."
- Eric Solomon, SVP Nielsen

What’s the common quip about advertising and marketing? “Half the money I spend on advertising is wasted; the trouble is I don’t know which half.” To tell you how long troubles of measuring marketing’s ROI have been around, that quote has been attributed to John Wanamaker (1838-1922) […]