Inspired by the smart city and clean tech movements, I've been thinking recently about citizens, our cities, time, mobile behavior, and socioeconomic & geodemographic segmentation. Specifically, I'm studying how to combine aspects of each to produce new spatiotemporal socioeconomic models of citizen behavior, which could subsequently be used to design the infrastructures of our future smart cities. It's all possible now, we just need cities, citizens, and carriers to participate willingly and collectively. I'm on a mission now to try to get that to happen.