Google Adds Demographic Targeting
"Demographic site selection is a way to find and run your ads on sites with the right audience for your AdWords campaigns," according to a statement on the AdWords section of Google's site.
Advertisers can target paid ads on Google Network sites by gender, age range, household income, ethnicity and people with children. Google's demographic Web site data are supplied by comScore Media Metrix.
MSN adCenter was the first engine to provided very detailed targeting, based on MSN user profiles, not Web site visits. Advertisers can target by geographic location, gender, age group, certain lifestyle factors, and other specifics.