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Re:Stopping the Internet of Noise – A useful internet back a... by ConfucianNardin on Wednesday July 05, 2017 @07:10AM (#14701435)
Example of "Reddit style comments" would be low effort jokes. Some subreddits are addressing this by using a convention where you can mark submissions with a "[serious]" tag, forbidding such replies (if there are any, they will usually be removed by the subreddit's moderators).

On HN, quite a few of them seem to get heavily downvoted (sometimes enough to mark them as dead, meaning you won't see them unless you explicitly opt in to see them).

Re:Stopping the Internet of Noise – A useful internet back a... by dredmorbius on Wednesday July 05, 2017 @09:47AM (#14702329)
Different subs vary. But the effect, overall, is discouraging.

Groupthink is another significant problem, particularly on topics which tend to gravitate toward ideology. Many economics subs operate this way.