News stories on ethical and social implications of marketing:
CSR-Net - Corporate Social Responsibility resources including news and podcasts.
Marketing News - South-Western's collection of news stories on ethical implications.
Wall Street Journal - You can sign up for a weekly mailout edited by O. C. Ferrel
Washington Post - This famous newspaper has a section on business ethics.
The ARC is looking for news spotters - find a "teachable" story and bring it to our attention by emailing arc@ama.org. Also, please feel free to suggest other publications.