Privacy Concerns Limit Online Ads, Study Says

Privacy advocates have had an impact on Madison Avenue after all, according to a new study.Among marketers, privacy groups are often portrayed as scare mongers out of touch with ordinary consumers, who overstate the privacy perils of data collection online. Still, the privacy advocates seem to be making a difference.
http://bits.blogs.nytimes.com/2010/04/30/privacy-concerns-limit-online-ads-study-says/