If this fellow has enough followers in his network, his predictions are self-fullfiling. The more he is right and the more followers join. I don't recall the name of the poster but I have noticed when short selling works that many posters with code numbers attached to names come to the board. Are the codes used by a variety of short sellers in a number of stocks is a question the SEC may like to investigate.
That was "get-hot-air" who shorted TGB. He has moved on. However he did give other short recomendentions, when prodded, which proved correct. CROX was one. I have followed some of his other posts and he has a following of posters who short. Today I bought more TGB as I feel we have hit bottom and the short s have left.