If you are going to diss someone you work with in publishing, do it on the phone to a friend. And assume the friend is going to pass it on. Maybe the friend won't, but just assume he/she will. If you have been smart enough to do your dissing on the phone, you can always deny it.
But if you posted it on your Facebook, in your Livejournal, or on your blog, or sent it in email even to a trusted friend, or posted it on a theoretically private list, you won't be able to deny it when dissee gets a forward.
I know that none of you do this... so good! You're smarter than many writers out there who ought to be aware of the damage they're doing to their careers.
Nothing is private on the internet.
Alicia who was just reading comments on someone else's blog... eek.