Will data collected be opened for other to use/analyse/exploit?
I do sometimes share the data with particular projects or developers on a case-by-case basis. If you are thinking about using the data for something interesting, you can contact me through the website.
A simple and easy, but far from perfect, way to do this is to tie pricing to the location of the customer. E.g. 'download this book and pay as much as you pay for an espresso in your hometown.'