This paper is an early assessment of the six original partners in the National Neighborhood Indicators Partnership. It first notes the technical and institutional advances that have made computer-based neighborhood indicators systems feasible. Second, it reviews the range of potential uses of such systems, illustrated by a few examples. Finally, it presents ten lessons the author draws from experience with neighborhood indicators systems-lessons offered as guides to planners and other local leaders that are interested in a data intermediary in their own cities.