I agree there is no room for libellous, slanderous comments I do however accept comments that are harsh, brutal and critical of companies and their management. If I'm investing or thinking of investing in a company, using what ever my timely investment strategy is, I do not care if I hurt other investors feelings if my comments run contrary to theirs. I'll read company releases and filings and comment accordingly. Like I say, it could be my money involved and I'll protect it.
Just as bad as libellous/slanderous posters are the blatant, criminal, fraudulent pumpers who continually mislead the board with their "soft" lying. Many condon this type of criminal because he/she is supporting the stock and curses/name calls the negative poster.
Where our money is involved, accept the pros and cons of discussion boards and be fair to good, hard, critical, honest posters whether you agree or disagree with them.