American Marketing Association
Marketing and advertising articles, research and tips at the AMA's Resource Library.
One of the most popular blogs on the internet. Seth discusses marketing and the way ideas spread.
Blog provides marketing news, opinion and commentary from a roster of marketing professors.
Marketing Research Association
An association of practitioners. Website includes the Blue Book a database of research organizations, standards and other information. Parts of the site are available to members only.
Current and historical data from the Reuters/University of Michigan Surveys of Consumers.