In a question I asked a while ago, somebody set a bounty of 200 and awarded it to an answer. I can now not find who it was since it was awarded, and my memory is not so good on who set the bounty.
Maybe it would be good to keep the name of the one offering the bounty by the answer chosen by him/her, next to the price, so that it is clear that the original questioner did not set the bounty and the choice. It looks funny to have an answer awarded a bounty and not chosen by the questioner. Now it seems that the questioner has set the bounty awarded it and not chosen the awarded question!