Buckets of Obama- or McCain-Interested Voters

Peter Whoriskey's Candidates' Web Sites Get to Know the Voters (Washington Post) is reporting that both presidential campaigns are using "retargeting" to send ads to people who visited their websites but who didn't leave their name or e-mail address by leaving a tracking cookie in the visitor's web browser. Such online behavioral targeting ad technologies have raised alarms from some privacy advocates. While Congress has begun looking into the use of such techniques for commercial advertisers, no similar investigation into political advertisers appears to be on the horizon. [JH]