No joke. US residents only.
If you are a Windows Vista or Windows XP user and decide to join and participate in both programs, we will send you a free Microsoft product when you participate in the program. Limit one gift per person. This offer is non-transferable. This offer expires on 12/31/07, while supplies last, and is not redeemable for cash. Taxes, if any, are your sole responsibility. The current list of products to choose from are:
Microsoft Windows Vista Ultimate (32-bit and 64-bit DVD)
Microsoft Office Ultimate 2007
Microsoft Money Plus Premium
Microsoft Student with Encarta Premium 2008
Microsoft Streets and Trips 2008
* Used our software for at least 3 months on a Windows Vista or Windows XP computer that is periodically connected to the internet.
We will verify that you?ve used the Windows Feedback Program software for three months, and then we?ll send your gift to you. If we detect that your computer does not send data, we will notify you.
https://wfp.microsoft.com/Privacy.aspx - Privacy info
https://wfp.microsoft.com/Welcome.aspx - Registration
This is a confirmed legit deal directly from Microsoft.