If finishing his neuroscience studies at Duke didn't keep him busy enough, Bryan Silverman is also an entrepreneur. He co-founded Star Toilet Paper in 2010 with his brother Jordan. That concept — manufacturing toilet paper with coupons to captive audiences in public restrooms — got him recognized as our College Entrepreneur of 2012. Today, the company has evolved into Install Media, focusing instead on logoed paper dispensers to match advertisers and audiences. We talked to Bryan about how the company is guiding this evolution through test markets and case studies and how he stays on track.