If it's an article I'm interested in, I'll generally read all the comments. If I want to bring up a particular point, I'll skim them to see if it's been brough

If it's an article I'm interested in, I'll generally read all the comments. If I want to bring up a particular point, I'll skim them to see if it's been brought up already and then read that tree of comments and post there if I still want/need to. I pay close attention to grayed out comments when I'm reading in order to make sure they are justified and up-vote them if I don't agree with the down-votes.