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This really is minor, and inconsequential, but it's a bug nonetheless.

Anyway, here it is.

Find a new user with 1 rep that has asked a question. Downvote question. Remove downvote. Voilà, 3 rep.

See this example, daniel [sic]

Or this example, Jim

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3  
Just upvoting them isn't a bug, is it. –  Izzy Aug 29 '09 at 5:07
    
The same bug occurs to answers, see this one. I came across this bug when adding and revoking a downvote on this question. –  Lekensteyn Mar 6 '11 at 15:55
    
possible duplicate of Removing a downvote adds reputation that wasn't there –  Al E. Feb 29 '12 at 13:45

3 Answers 3

Yeah, this has been known for a while... I don't think anyone is too concerned, given that it only works for users without any reputation, and it doesn't really give them much.

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Fair enough - just thought I'd drop it in mixer :) –  Izzy Aug 28 '09 at 15:27
    
No worries - good that it's documented somewhere. –  Shog9 Aug 28 '09 at 15:30
9  
Now I'm wondering what would happen if several people downvoted, and they all cancelled... –  Izzy Aug 28 '09 at 15:40
1  
@Izzy: (For the record.) It works, the rep stacks. –  Jeremy Banks Sep 13 '11 at 2:28

What happens when you do this to a user who is suspended? (Suspension sets your rep to 1, so you cannot perform basic tasks).

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Can I use your account to test with? The only downside is the reputation recalc that's required when you exit the box. (No one else is in timed suspension right now.) –  Bill the Lizard Aug 28 '09 at 17:37
    
How long will I be suspended? –  Jonathan Sampson Aug 28 '09 at 17:50
    
A couple of minutes maximum. (It will say 1 day, but I'll lift the ban manually once I test voting.) –  Bill the Lizard Aug 28 '09 at 17:52
    
Suspended users can't ask questions here...are you talking about doing this on SO instead? –  Jonathan Sampson Aug 28 '09 at 17:57
2  
I was going to do it here and test with this answer and one of your other questions. I can do it on SO, but the rep recalc might hurt a lot more on there. –  Bill the Lizard Aug 28 '09 at 17:58
    
I tested it against an answer earlier with a 1 rep suspended user. Nothing happened. This bug is against questions, so I had no case to test it against since I couldn't find a question that qualified. I'm not sure I want to undergo a rep-recalc on SO :) –  Jonathan Sampson Aug 28 '09 at 18:00
    
No, I didn't think so. :) That's alright, I'm sure someone will give me the opportunity to try it out sooner or later. –  Bill the Lizard Aug 28 '09 at 18:03
    
Sorry, man. If it had been here, I would be more than happy. But with the rep-recalc and the fact that suspended users already can't ask new questions, the scenario doesn't seem to be a great case to test against. –  Jonathan Sampson Aug 28 '09 at 18:05
    
@Bill, you can test w/ my account. Got nothing to lose... –  hyperslug Aug 29 '09 at 7:51

These inconsistencies will no longer happen. As part of some large reputation changes, downvote reversals will restore the correct amount of reputation (including adjusting for the reputation cap).

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