I came across this article on my Professional Liability Insurance company's website and thought I'd share it: What to Say About Another Practitioner.
In my experience, I have seen business deals go under because some of my therapist colleagues spoke ill of other therapists in the community and the clinic owner refused to nurture a toxic work environment. I have seen friendships lost, professional relationships severed, and patient families left confused as a result of gossip amongst healthcare practitioners.
Now, if you have a legitimate concern, I'm sure you can find a tactful way to express it. Namecalling and backstabbing will only serve to give people a sense of concern about you. The therapy community is a small one, so what goes around truly comes around eventually.
I think that Bambi gives a fantastic life lesson: "If you don't have anything nice to say, don't say anything at all."