The New York Times
http://www.nytimes.com/2009/09/30/business/media/30adco.html?_r=2&scp=1&sq=privacy%20study&st=cse
ABOUT two-thirds of Americans object to online tracking by advertisers — and that number rises once they learn the different ways marketers are following their online movements, according to a new survey from professors at the University of Pennsylvania and the University of California, Berkeley.