This app will become more useful as more sites are added. For most users, it will not be a "dark sky finder," but an "away-from-bright-streetlights" finder, which is still a valuable service. Currently, there are only a few sites listed within a hundred miles of me. Questionable whether a sole developer can moderate entries forever, to make the app stick among astronomers.
Difficult to add sites only by dragging the map and dropping a pin. Needs to be able to find addresses and lat/long coordinates.
Bozocity about Dark Sky Finder