Here are some reader comments on how much personal  information Microsoft actually knows about customers:
  I'll guarantee you  that Microsoft knows LESS about you than your local grocer does. (And the  grocer doesn't even pretend to protect your privacy.) All over America, people  sign up for "discount" cards in exchange for personal information  (essentially, buying habits). We give out our snail-mail addresses as quickly  as we give out our e-mail addresses and our cell phone numbers. 
  Microsoft knows  exactly what we allow them to know when we agree to share system performance  information. When we sign up for newsletters. When we connect ourselves  perpetually to the Internet. When we don't use AV software, spyware detectors,  firewalls or routers to isolate our computers from the Internet. We don't even  use common sense when using e-mail or the Web.
  The federal government  created the HPPA laws to protect our privacy, and the first thing our doctors  do is ask us to sign a waiver to release them from these privacy restrictions.
  Our kids put every  aspect of their lives on Facebook and then get upset when their parents,  teachers or (prospective) employers look them up. 
  If you don't want to  share information, then don't. But, don't demonize those entities with which  you DO share personal information. 
  That's my two cents.
    -Marc
  Interesting idea, Doug. We will let the  people who are gathering the information about us tell us what they have. They  would never lie would they? As if any manager at Microsoft or Google knows what  his people are doing every minute. The reality is, we should all be actively  engaged in lying to the data gatherers so they do not know what to believe.  Since you have surrendered your life to people  you do not know, you should simply quit worrying about it. It is already too  late.
    -Anonymous
  Am I becoming a Redmond fanboy and,  therefore, missing what Microsoft is up to? Or is it really concerned about  your privacy? 
  Maybe a little of  both...
    -Vicke