Last year, I was in Dili, Timor Leste, listening to an event on big data that was partially sponsored by SciDev, a respected science communication organization. My recollection is that the speakers were talking about work done by others based on reports. So we were happy to have our research featured in an article in SciDev. The author, Nalaka Gunawardene, attended our presentation at the Sri Lanka Institute of Engineers in January and made further efforts to understand what we were doing. MNBD allows tracking and mapping of daily changes in population densities relative to midnight (‘home location’).