"It was 1989, I was a senior journalism major at Temple University, and eager to break into the world of work. David was a principal at GK and believed in an eager kid enough to hire me as an intern. I learned more in those 3 months than from my previous 3 internships combined and was fortunate to earn the opportunity to get my first big break when David hired me upon graduation and then again upon GK's acquisition. In the 20+ years since, David remains among my most trusted and helpful mentors. He has never ceased to impress me with his love for and dedication to the profession as well as his adaptability to evolving technology and trends. His finger is always on the pulse. As both a maven and connector, David - at the very least - is a good PR Guy to "follow" on Twitter and all the more reliable and valuable to engage in service. Anyone fortunate enough to do so will experience their gratitude to David build as well."

Matthew Zinmann is the founder of www.internshipsuccess.com.