Get Free Copy of Windows Vista

Microsoft launched Windows Feedback Program. Long story short, microsoft give you free copy of windows vista/xp (any edition) in exchange of some feed backs from you for 3 months.
The links is there.
http://wfp.microsoft.com/

I'm surprised that it really works.

here is a screen shot, in which I was able to pass Windows Genuine Advantage Validation before downloading PowerShell. Noted that I've never enter any cd-key of any sort for this vista home premium installation.