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I have been a member of many SE sites for years now, as a result, I am quite familiar with the guidelines and expectations on the platform. However, even after reviewing the help section I can't seem to find much info on this topic.
I saw the topic on jokes (which was answered with ambiguity) but nothing on comments like "thanks for the informative answer" or the like.
I would assume these are likely not a problem but can also see how they might just clutter topics and become excessive.
Is this one of those things where we are supposed to use "common sense"? I hope not, whenever I diverge from a rule-based system I end up in Vegas with 2 $50 hookers.