I dont really agree with that article. I see the trolls as deliberately posting crap that on investigation turns out to be......crap.
Some forums manage this and some ignore it.
There are a few posters on here that spam up the board with crap that is disproven pretty quickly but is still allowed to stand.
A while back one of the Alt righters posted a video purporting to be muslims rioting in London.It was actually a video of nazis attacking muslims in Cardiff. It will still be on the site somewhere. Credibility shot.
Low quality mods dont help the situation and give the trolls a paradise they dont deserve.