Michael Silberman, New York Mag.com’s general manager, is trying to figure out how to nudge visitors who visit a website for the first time into returning. Sam Kirkland reports that last year 46 million Web users visited New York magazine’s pop culture site, Vulture, for the first time. Of those, 7.6 million came back at least once. Silberman sees those 7.6 million as a baseline to grow. That’s why he is looking at what Chartbeat found.