Might be me, but w/ my Firefox, sitting in Tel Aviv, I end up with a disabled/grey map of the US of A and a modal dialog box that has no title / a ~crappy~ style and asks me for a US zip code. [1]
Not for me?
Not for me?
I suggest a "We don't offer our services outside of the USA for now. Leave us your email and country and we will notify you when…" somewhere in the ZIP code pop-in.