Microsoft will give you a free copy of Vista Ultimate if you let them snoop on you for 3 months. Infact its not just vista you can get, perhaps you?d prefer these instead ?
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
So where?s the catch ? well there isn?t one you just download their spying software, fill out a 15min survey and you?re good to go. Further details are available here:
http://wfp.microsoft.com/
p.s. only for US