Probably at least some MathOverflow users have been in a situation like this.

I have placed a bounty on some question in hope to get an answer (or a better answer or a specific type of answer, for example, combinatorial proof instead of inductive argument). I did not get an answer I wanted. If there was some answer at all, maybe I awarded the bounty to the closest match, but I still would like to see an answer fulfilling my original requirements. What can I do next?

  • One possibility is adding new bounties on the same question repeatedly. This is probably not very efficient and I could exhaust non-negligible part of my reputation after a few iterations. (This would be difficult especially for low rep users.)
  • I could mention (in a comment or - if it is my question - directly in a question), that if somebody posts an answer fulfilling some criteria, I will reward such answer with a bounty. A clear disadvantage of this is that this will not be very prominently visible.
  • There is also this feature request: Request new function Standing Bounty. But considering that it is two years old and currently at score $-12$, it is not very likely that it gets implemented.

Would creating a list of such bounties be potentially useful. I would imagine each entry to contain description of the question and what the user offering the potential bounty looks for. And the entry would be considered as a commitment to award a bounty if the answer they are satisfied with is posted.

And if something like that could be useful, what would be the best way to implement it? Would it be a dedicated meta post? (I am afraid it might get too long.) Would perhaps a dedicated chat room be more suitable? Or would a better solution be some wiki-like page not directly on MathOverflow website?

To prevent misuse of the list, maybe some rules would be needed? Probably only person who already gave at least one bounty on that question should post there? And maybe there could be some age limit - say questions as least one or two months old?


I will add that there are possibilities to find list of all past bounties. However, not all past bounties are equal. The fact that a user offered bounty for some question in the past does not automatically mean that they are still interested in (new answers for) that question. Somebody might, for example, just add a bounty simply to reward an answer which is already posted. However, the proposal here is mainly for the question where the user offering a bounty is still interested in the question and is willing to reward a new answer by additional bounty, if a satisfactory answer is posted.

Several posts here on meta suggests that some users are not quite satisfied with visibility of the featured questions. For example: Is bounties period sufficient? and Why is it not possible to offer a bounty for longer than 7 days? (In other words, some users feel they did not got their money reputation points' worth after they offering a bounty.) In fact, I have mentioned rather similar proposal in my answer to Is bounties period sufficient? I am posting this here so that it is slightly more visible and also so that various possible implementations of this can be discussed here. (And also whether something like this could be potentially useful.)

I will also add that I have proposed something similar on Mathematics Meta: Could list of unresolved past bounties be useful? The question was quite well received - the score of the question is currently +37 and answer with a proposed solution is at +8 - but the proposal was not successful. I have posted an answer to this question, giving more details about the "chat-solution". (In the answer I have also tried to make a comparison between MO and MSE concerning the aspects which might influence such undertaking.)

I will also point out that there already is some post with list of interesting questions on this meta. However, it is supposed to be used for questions from the Mathematics site: Interesting (and not sufficiently answered) questions on math.SE. (Do you think something similar could work for this purpose?)

I am also aware that there are users who dislike the whole gamification and reputation aspect of the site. For them, possibility of getting additional points might in fact decrease their motivation to provide an answer. But this is true already for the bounty system. (See, for example, the following for some older related discussions: Opting out of reputation or Hiding reputation.)

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    Do I understand it well that we cannot have Standing bounties because the parent site doesn't allow it? – domotorp Jul 10 at 9:19
  • @domotorp I am not sure what you mean by parent site. MathOverflow runs on Stack Exchange platform. The Stack Exchange software does not have a "standing bounty" feature. BTW this feature request is linked in my question - I am not sure whether this is what you had in mind: Request new function Standing Bounty. – Martin Sleziak Jul 10 at 9:22
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    Yes, I've meant the platform. So do I understand it well that on the major stackoverflow site this feature is unwanted and that's why they don't implement it, although other, smaller sites, would welcome this feature? If this is the case, what can we do about it? – domotorp Jul 10 at 11:28
  • @domotorp Perhaps we could move the discussion (if there is some need to continue) elsewhere, so that we do not leave here too many comments related only indirectly to the question at hand. Maybe in the main chatroom. – Martin Sleziak Jul 10 at 12:24

Since we are discussing access to some old featured questions, it might be useful to summarize methods which already are available.

This answer is a community wiki - feel free to add other possibilities you are aware of.


Probably the ideal tool for this data explorer a.k.a. SEDE. Here are some queries which can be used to find past bounties:


  • If you want see past bounties offered/earned by a specific users, you can find them on the user profile of this user.
  • Some sites post featured question also on their twitter account. However, MathOverflow does not have one. See: MO Twitter presence?
  • As an experiment I have created also this chat room. The idea was to add the feed with featured questions there. However, it seems that it is only possible to do this for questions in particular tag, there isn't a single feed with featured questions suitable for chat. The room was started today - we will see whether it is going to be useful for something; if not we can simply drop it. – Martin Sleziak Dec 24 '17 at 14:01

One possibility how to do this would be to have a chat room dedicated solely for this purpose. Users could post the questions there, together with short commentary what they are looking for, why they are not satisfied with the answers posted so far and what makes the question interested. Basically I would imagine something along the lines of the chatroom suggested on Mathematics site some time ago. You can see the proposed rules for this room.

What are possible advantages of posting this in chat room?

  • If users have some comments on the question, they can respond there. Maybe that could lead to some improvements of the questions or even partial solutions.
  • You can easily find all (oneboxed) questions posted there.
  • You can find questions in a specific tag like this or like this.

Of course, the search functionality work in any chatroom. You can search for all oneboxed questions and also for questions in a specific tag.

Does it have a chance of getting some attention?

Despite the fact that users on Mathematics site apparently liked the proposal (at least the question on meta gained enough upvotes), the chat room did not really pick up there. I hoped that if I make at least some users aware of the room, the word would spread further. I have summarized my effort here.

Probably here on MO, the chatroom would have a better chance of appearing in the sidebar. You might have noticed that sometimes two chatrooms are shown in the sidebar when you are displaying the site. AFAICT the rooms are selected based on whether they had some recent activity.

The proposed room would have rather low traffic - new messages would be posted there only if somebody has some bounty question they are interested in. So on a site like Mathematics which has many active chatrooms, this room would almost never be displayed in the sidebar. For rooms associated with MathOverflow the situation is somewhat different. The only room with non-negligible activity is Homotopy Theory. So even a low-traffic room like this would have a chance to appear in the sidebar when some new messages are posted.

In some discussions several users mentioned that they do not even visit the featured tab. The chatrooms displayed in the sidebar are somewhat bigger than the blue number on the featured tab, so if displayed there, the visibility of this chatroom could possibly be comparable with the featured tab.

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