The document discusses the concept of "City Knowledge" which promotes municipalities transforming from "hunter-gatherers" of urban data to "farmers" of municipal information. It argues municipalities should utilize their six tools of implementation and data collection to "farm" data on an ongoing basis from within and outside entities. This would allow municipalities to continuously capture changes and backlog information to develop robust municipal spatial data infrastructures and share data through web services. It notes most opportunities are in smaller, "long tail" cities and targeting change sources and processes over time could fully capture information.