Fark Trolls
Yeah, I hear what you mean by Slashdot being ruined by trolls.
We're getting that sort of lot at Fark. It's sad because the posts' threads are becoming more-and-more routine... i.e. Politics: One person, right off the bat, says something totally polarised and stupid. Then another person from the opposite extreme makes some sort of uninformed comment, and it all goes downhill from there. Usually it turns out Moore v. [anything right], Kerry v. Bush ("A great leader divides" or something like that).
To make the long story short (too late), trolls are starting to ruin all the good sites like Fark, "/.", etc