Not only a dupe, but one of the first remark on the discussion was that, not CREDIT CARD COMPANIES already track your every purchase and visits to specific stores, and have done this for a long time.
This is a forum of well-informed people. We would want to read about Google other things that what the PR firm hired by Microsoft spews out day in or day out.
Either that or I am going to find another IT news forum. I want to read informed opinions, and while we still find interesting discussions here, it is becoming far and between... Anyone else having this feeling?