I'd love to have us give better controls to end-users -- we're still investigating ways for users to better control things like that on their own devices. The web makes this a bit easier with adchoices (ie: setting cross-domain cookies opting out) and the ability to more easily block domain patterns with browser plugins.

We have an internal team that is dedicated purely to privacy innovation and I'll bring this up with them.

> Edit: the wireframing and reconstructing from xaml views is quite the technical innovation, better than screenshots indeed.

Thanks! This took us a _long_ time to get right, as you can imagine.