Can you comment on how comments could benefit from NLP related advances? E.g. detecting entities and using those as entry points into discussion, detecting similar topics discussed in different threads, detecting comments which are low effort and don't add much value. I hate the fact that first/top comment sets the tone for discussion overall and lot of people end up expending energy on that topic alone. People end up discussing something tangential just because the first commenter had "interesting" observation. Also I hate the pun threads which plagues reddit.