Most Successful Communication Tool You Use?

Melinda Mayo, Communications and Media Officer/FOIA Officer, City of Roanoke, VA writes:
"What are the most successful Communication Tools you use? My office is looking at the current methods we use for engaging and communicating with citizens, to evaluate whether we are keeping pace with other local governments. I'm interested in knowing what you assess as your most successful communication tools, and how they help you measure how well you communicate."