For the past two years MixRank has been building the world's largest database of digital advertisers. By analyzing the websites of more than 500,000 digital advertisers with sophisticated data mining technology developed for this project, amazing insights into cutting-edge research best practices employed by the world's leading marketers can be gained. The enormous volume of data studied permits going beyond case studies to present, for the first time, a truly comprehensive perspective about questions like: Which surprising analytics strategy is used only by the top 3% of marketers? How do major global brands effectively decide which user activity data to capture and how do they separate the signal from the noise? Which measurements are actually correlated with the success of a campaign?