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We've recently gotten a flag on Stack Overflow indicating that a user has gone through and unaccepted every single one of their answers.

While this is perfectly OK and allowed by the system, it could be an indicator of vandalism, and right now, it's not something that's easily detectable.

That said, I'd like to see two things. First, there should be a way to see that a user unaccepted an answer in their activity. We can see accepts, but not unaccepts.

Note that we can look at the reputation and see the -2 applied for unaccepting an answer (and we can see a bunch of them in a row), but we have a specific tab in the activity section of our profiles to show our accepts, there's no reason we shouldn't have the same duplication of information for the unaccept case.

If a user unaccepts a number of answers in a short period of time, I'd like to see a flag in the moderator queue indicating that there were a number of unaccepts in a short period of time, just like we have for edits and deletes.

Finally, as per Sha Dow Wiz Ard's suggestion in the comments, there should be a rate limit on how many unaccepts you can do per day, as per the delete rate limit.

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That most certainly sounds peculiar... –  Lix Apr 30 '12 at 13:05
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I would go even further - as unaccept should be rare thing under normal circumstances, it should be limited to only a few per day same way that there is limit on deletions for example. (as far as I know there is such limit) –  Shadow Wizard Apr 30 '12 at 13:05
    
would we see if one of our answers has been unaccepted by someone in our history.. I don't know if i am confused or what but i think i had an answer unaccepted due to a new solution being available but it now looks like it was never accepted in the first place. as it goes i was interested to see the new solution so would have liked to know anyway. –  gordatron Apr 30 '12 at 13:06
    
@Lix I for one am not surprised - user got frustrated for some reason (there can be many: downvotes on his posts, lack of answer he expected to, annoying user bashing him etc etc) and go on a rampage. Most just delete their posts or at least try to.. –  Shadow Wizard Apr 30 '12 at 13:07
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@gordatron yes it should be visible in the reputation tab in the profile, you will see -15 in red background with unaccept as the description and the time when it happened. –  Shadow Wizard Apr 30 '12 at 13:10
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@sha - that sounds like a lot of work... but... rage quit will make you do silly things :P –  Lix Apr 30 '12 at 13:12
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@gordatron for example, you unaccepted an answer on July 18, 2010 so it's now clearly visible in the author profile page under that day. screenshot –  Shadow Wizard Apr 30 '12 at 13:17
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Surely an unaccept would show a -2 in the users reputation profile. –  ChrisF Apr 30 '12 at 13:17
    
@chr - -15 perhaps... –  Lix Apr 30 '12 at 13:18
    
@ChrisF - I am certain it will, but the system will not notify moderators if a bunch of these was made in a short amount of time. –  Oded Apr 30 '12 at 13:18
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@Lix - the -15 will be on the reputation page of the answerwer. This is on the reputation page of the asker. –  ChrisF Apr 30 '12 at 13:19
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@Lix - No -15 to the person whose answer was unaccepted. -2 for the person who did the unaccepting (reveting the +2 from accepting an answer) –  Oded Apr 30 '12 at 13:19
    
@Oded - I agree that the moderator flag is required. I was just asking if the -2 currently appears on the askers profile page. –  ChrisF Apr 30 '12 at 13:19
    
@ChrisF - It does. –  Oded Apr 30 '12 at 13:20
    
@ShaDowWizArd cool thanks! and I do see the -2 rep for unaccepting too. –  gordatron Apr 30 '12 at 13:20

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