some hacks I think could increase quality:

  - mandatory 60 second re-click to submit a comment, without edits
  - mandatory 60 second re-click on votes after a rate threshold is exceeded
  - multiple choice votes to express motivation, intention, feedback
  - do not publish karma numbers
  - publish "example threads" that show values being practiced, including dead links/comments examples
  - randomly assign usernames every 12 months
  - tags and tag feeds