"You open your browser to look at the Web. Do you know who is looking back at you?" warns Washington Post technology columnist Geoffrey A. Fowler:The columnist concludes that "having the world's biggest advertising company make the most popular Web browser was about as smart as letting kids run a candy shop," and argues that through its Doubleclick and other ad businesses, Google "is the No. 1 cookie maker -- the Mrs. Fields of the web."He also reports that Firefox is now working on ways to block browser "fingerprinting".