I think HackerNews (and similar sites) would greatly benefit from having submissions grouped by a moderator. Don't display all submissions about NSA or Steve Jobs as separate lines. Display them as a thread, with some general information like "6 submissions, tags: Steve Jobs is still dead, average karma: 703"

  from itertools import groupby
  
  better_hn = sorted(hn, key=topic)
  better_hn = [topic, len(list(submissions))
    for topic, submissions in groupby(better_hn)]

  for line in better_hn:
      print(line)