- The user who posted the bounty (since it's no longer the same as the owner of the post).
- The reason selected for posting the bounty.
- The custom message entered by the bounty poster.
The main piece that I'd like to see is the reason selected for the bounty. My immediate use case is for @BountyBot, a Twitter bot that tweets interesting bounty questions. I'd like to filter out bounties posted for the "Reward existing answer" reason, since I only want to draw attention to questions that need new answers. (The other pieces of information would be useful if I were posting on Facebook, Google+, a blog, or anywhere that allowed more than 140 characters.)