Kind of hard to believe, but from all indications Microsoft is trying to be Santa Clause here. You do have to agree thought to a stipulation. Check it out the link and let us know if you would be willing to say yes. In case you all ready have Vista Ulitmate they are offering other software for free.
engadget.com Snag Vista Ultimate for free, in exchange for your privacy
(Clink the link, for more info click Nootbook Reviews within the link, from there you can go to wfp.microsoft.com)
WWW LinkSo would you do it?
EDIT: Be aware that one person has tried this and it borked their computer.