The NIST Physical Measurement Laboratory – online Atomic Spectra Database “provides the most authoritative information about atomic spectra available anywhere, and it is used by researchers worldwide. But how wide, exactly, is that world? What elements and wavelengths are in highest demand by different groups? And how can the ASD better serve its user community? Those questions are now being answered in detail by a new software tracking system, installed in November 2011, which records user request parameters such as element and wavelenght, as well as IP address information. A just-completed first analysis of those requests has revealed numerous unexpected insights into user preferences and needs, including a surprisingly large interest in far-infrared (FIR) wavelengths, and unanticipated similarities between searches initiated by academia and industry.”