[Disruptive_Dave]

Never upvote posts. I upvote comments, though my bar for upvoting is embarrassingly higher than my bar for dishing out downvotes.

[sokoloff]

For a time, I tried modifying my behavior by hiding downvote links on via a Stylus CSS:

  [title=downvote] {
    display: none
  }

I had an already high upvote:downvote ratio, but this made me even more conscious of the few times I bothered to downvote a comment (because it meant I had to take extra steps to disable that CSS). I mostly only downvote for flamebait or outrageously unproductive comments.