Ah,
   A very touchy subject for MS!
They try to legitimize their own use of "Spyware" by saying that customer's
asked for this"service". I assume you are speaking of KB905474.
   This little program exhibits MS own Definition of "Spyware". And to
prove that fact; I would refer you to MS own anti-spyware site
http://www.microsoft.com/athome/security/spyware/software/msft/analysis.mspx
for further review.
   KB905474 exhibits many of the characteristics that MS itself says is
"Spyware"
Not the least of which are:
1)Initiates an outbound connection (modem, Internet, etc.) without user
consent
2)Fails to provide Help information for uninstalling the program
3)Fails to use standard install/uninstall features, such as Add/Remove
Programs
4)Uses deceptive prompts to entice users to download or install software.

#4 Specifically being that MS bundles this little program in with "High
Priority" updates;
and it's name is deceptively similiar to Windows Genuine Advantage
Validation tool;which in itself does not initiate an outbound
connection;although still unable to be removed(easily)

The only "high prority" to this little program is to MS bank accounts. Some
MVP's in here; I believe;work for MS itself;the way they spout MS rhetoric.
   You don't need this program at all.
I could go on and on-already have actually;check out this forum from MS:
http://forums.microsoft.com/genuine/default.aspx?siteid=25

They get around the issue of user-consent very deceptively;by bundling this
with "high priority" updates.
And many people assume that since it's "high priority" they just
automatically download it. BINGO-user consent!! Let Carey rant about
this-however; the simple fact is-it is spyware!!!

Jeff

When you boot your computer, a check is performed to see if
it has been properly activated and the Product Key is indeed
a genuine Product Key and not one reported stolen.  Stolen
Product Keys are added daily to the WGA service and are
primarily Volume License Products Keys sold only to
corporations and reported stolen.