Earlier quoted context omitted.
Have you run into any articles that detail exactly what is captured and sent off of your computer? Has Microsoft release more than just a little bit of information on what they use that info for? Not just what the setting screen and privacy policy say.
It will be impossible to know and/or verify what they're actually sending. Even if they told us exactly what the data contains, though, who will believe them? Besides, we already know what they'll say: they'll use it for debugging and troubleshooting, to make the products better, and to enhance your user experience. In certain circumstances, they may share the data -- but only with their trusted partners, of course.…
"...what they'll say..." They already said that in their privacy policy. I was wondering if they had released more details. Like "We record your voice commands and add them to a database of millions of other people making the same command so Cortana can understand people better." And, "Our voice interpretation service is provided by a trusted partner. They signed a contract that requires they take this step and this step to keep your data secure."