Quick note about a minor Dr. Otto update (drotto-0.0.2d). The following options have been added:

  # Set this true to allow bids for comments as well as root posts.
  :allow_comment_bids: false

Setting this to false will skip over a bid that leads to a comment. Some operators of drotto prefer not to allow votes to comments because they are often low-quality, no-effort content.

  # Completely ignore this asset when processing bounce.  This is mainly if you
  # want to accept donations in a different asset.
  :ignore_asset: STEEM

If this option is not set, STEEM will be returned automatically. So this allows flexibility in the asset not being used for bids.