APA has recently started a planning ethics blog: http://blogs.planning.org/
The blog is designed to highlight common ethical traps, provide memorable illustrations, and provide a platform for regular review and discussion of the AICP Code of Ethics and Professional Conduct, with particular focus on the Ethics Case of the Year. Discussion of ethics case studies should begin in late November 2013. If you are a member of AICP, the blog should be a periodic stop to revisit ethical issues. If you aren’t AICP, the blog will also touch on APA’s Principles, which are relevant to all citizen and professional planners.