I never thought I'd be posting a link like this about Positive Psychology, but I think you should read this blogpost, which was sent to me on Monday. It refers to a new book, "The Dark Side: The Inside Story of How The War on Terror Turned into a War on American Ideals", in which it is alleged that Martin Seligman, founder of Positive Psychology, was involved in CIA torture. If true, this would of course be completely unethical behaviour, and completely against the principles of Positive Psychology.
After that you should read this blogpost, from one of Seligman's colleagues, Ben Dean, which includes Seligman's response to the allegations (he denies this involvement).
Let's hope the truth will out sooner rather than later.