In general, I find most organizations that are worth doing business with can simply be asked “What are the most common complaints about [your organization]”. Obviously, they will still present any weaknesses with a positive spin, but they should have an answer, and any evasiveness or a complete lack of response should strike one as very suspicious
realsocialskills said:
That sounds promising, but I’ve never tried that.
Are there answers you’ve received that you regard as green flags?