Ok, nice to know that you are aware that 5-digit Zip code doesn't cover all possible locations.
Could you elaborate on the legal issues you're facing en route to going worldwide?
Well, a lawyer friend described some EU privacy laws and it's not clear to me what we'd have to change to comply. Or if we even have to comply, since we operate in the US. We are looking into it.
It would be nice if you mentioned that somewhere on your "get started" form.