Er... reading the "Learn More" option under the "Personal Data We Collect" heading sends up giant red flags... why would anyone agree to this, ever?

I don't care how good your data gets anonymized; time and again, it's been shown that anonymized data can be fingerprinted and de-anonymized over time.

Whether or not this is happening, this should raise legitimate concerns with people who are considering, or who have already upgraded to Windows 10.