The company that began by helping hotels win bookings now helps commerce platforms sell advertising. Its most revealing lesson is about how much business can disappear between an interested buyer and a working campaign.

A Commodore 64, a German manual and a teenage leap from Macedonia to Wisconsin shaped a founder who treats change as raw material. Fifteen years after starting PMG with $960, George Popstefanov is trying to turn marketing intelligence into action - without losing the culture that made the company work.