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.