An article at TheStreet.com named Google Targets Ad Gains has a quote from Search Engine Watch Forums moderator, contextual ad correspondent of the Search Engine Watch blog, and of well known JenSense.com, Jennifer Slegg. Jennifer is asked for a comment on the recent addition of demographic targeting added to AdWords, where she says;
It will enable advertisers to be more selective in the types of sites they want their ads appearing on.
There is a kudos to Jennifer Slegg thread at Search Engine Watch Forums.