I think a whole lot of messages are posted on any column/report/news, is it not possible to have readers ranking on comments so that the best comments are on the top, in this way people will stop putting crap and try to put more meaningfull stuff as everyone would want their post to be highly rated, something similiar to mouthshut.com, this will also help readers to always reach your site as they know that a article would be having some ranked comments which would be worth a see.
