This document appears to be telling the story of Sebastiaan Heijne, a Dutch entrepreneur and co-founder of Signkick, an e-commerce company specializing in outdoor advertising. It describes the early days of Signkick, including Heijne and his partners having the idea to use outdoor advertising panels, being told they couldn't have any panels, searching Amsterdam for opportunities, and realizing there was a large market for outdoor ad space with annual spending of 17 million euros and over 50,000 panels. It emphasizes that Signkick is still a startup despite early successes.