www.marketingpower.com
The American Marketing Association's Website.
www.arfsite.org
The Advertising Research Foundation
www.mra-net.org
The Marketing Research Association.
www.qrca.com
The Qualitative Research Consultants Association
www.researchinfo.com
A good source for general information on Marketing Research, plus a very active roundtable on Research issues.
www.worldopinion.com
The premier site for Marketing Research information.