Allow bounty creator to hide any entries

As a bounty creator I would like to be able to publicly hide any entries I don't consider valid submissions since I'm using my buzz to award and decide. For example let's say there is a rabbits themed bounty and I uploaded an unrelated XXX rated image to it. I think an author has the right to hide such an entry just as model creators can. And there will be a message with a link that the bounty author has hidden some entries and only registered users may see them if they wish. I mean even on official contests admins choose whether they accept a new entry or not, that's what I essentially want for a bounty as well or create a new type of user created contests with a similar acceptence system.