I cannot imagine a spammed e-mail from Bill Gates which is _not_ 
being used to build or refine a database.

On the http address below, if you use an lcid other than 1033 and 
id of anything other than 155, you get a server error message, not 
just a generic 'signup'. This most likely means the two numbers are 
correlated with the original e-mail address. Thus, they've sent you a 
key, and are watching you hit their signup page, probably building a
database with reports that identify 'exceptions.' Well, they got
a number of such hits from Rob Becker, then, while I tinkered around
with the http address...

On Fri, 19 Jul 2002 08:34:40 -0500, Becker, Rob wrote:
>As I mentioned at the outset, you are receiving this email as a
>recipient of a Microsoft newsletter. If you would like to hear from
>me, Steve and periodically from other Microsoft executives in the future, please
>go to http://register.microsoft.com/subscription/subscribeMe.asp?lcid=1033&id=155. 
>If you don't wish to hear from us again, you do not need to do 
>anything. We will not send you another executive email unless
>you choose to subscribe at the link above.