Thanks for the detailed response. It would be nice to have some way to "iterate quickly" (and cheaply) in the legal realm, as a lot of laws seem to have unintended consequences, probably because the are not foreseeable by the folks writing the law.
I also enjoyed cookiecaper's post, thank you for your sharing. Is it possible to compete against the facebook/twitter inbound data-stream knowledge and against google's corpo-vision, if you're operating from another country with non-restrictive rights? Geo-fences are the most annoying political invention ever, we know that, but by obeying to unhealthy laws, we encourage it. Not every law makes sense and should be obeyed blindly.