A third approach: pray the watcher is a good guy that will respect your location privacy rules (ensure he agrees with that); give him the usage ruleshe is concerned by; if the guy appears as a bad guy, have a discussion together (or start a legal action)
This last issue illustrates a very important concern about privacy: the further (uncontrolled) usage of a disclosed information (see also: Creative Commons)
Definition: “Condition in which individuals who exercise power are constrained by external means and by internal norms” (Public Administration Dictionary)
