you guys should add:
-a thumbs down/dislike comment button
-the OP of the thread should be able block certain users from further commenting on that thread (due to trolling, useless/obvious comments) or any other future threads that the OP posts up.
-if not above the, the OP of the thread should be able to delete/remove certain comments in their thread due to some of the reasons stated above..
Anybody else with other possible recommendations?