I wanted to ask this question here as I feel it is applicable.

I am a member of various trading forums, and today I saw a post from a noob on one of the boards about a particular trader who hasnt fulfilled his end of a deal. The reported trader also posts at another forum I am a member of and has been reported neither good or bad on it, the one hes been reported on this is the first report of any sort. I bring up the noob part as it could be a vendetta or something as neither have any reputation on the board that the bad apple was reported.

Am I under the obligation as a responsible trader (which I feel I am) to let the people on the 2nd forum know that the person being reported has been reported bad somewhere else? Even without giving the potential bad apple a chance to respond publicly? Should I wait or stay out of it and not do anything?

Sorry if thats too wordy or muddy, typing as I think