Because it has been attacked and gamed by various troll armies over the years, the Slashdot comment system works about as well as any comment system out there.

Because it has been attacked and gamed by various troll armies over the years, the Slashdot comment system works about as well as any comment system out there. What's interesting about it is, if you really want to, you can see all the troll comments, but you have to specifically tweak all the comment knobs to unhide them.