How can it happen that I suddenly lose an upvote on this question How can Kaluza-Klein particles be told apart from winding modes at the LHC? (I had 3) together with 5 reputation points? Upon clicking "reputation" on my profile I see no downvotes or any other reason for this ...
1 Answer
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My guess would be that somebody upvoted you and then later reversed the upvote. Votes can be reversed either within 5 minutes (I think) of their original casting, or any time after the post is edited.
If you'd gotten a downvote you would have lost 2 rep, not 5, and it would show up on your profile.
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1$\begingroup$ Further, downvotes would show in your reputation history, but the retraction of a vote would not. I think there is a discussion (or perhaps several) of this on the mother meta, but the team has never seen fit to do anything about it. $\endgroup$ Commented Jan 18, 2012 at 17:44
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$\begingroup$ Thanks David and dmckee, this is a plausible explanation ... $\endgroup$– DilatonCommented Jan 18, 2012 at 18:41
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$\begingroup$ Should a "retraction" of an upvote not be explained in the same fashion by a comment as a donwvote to clarify if after an edit the question is worse or if the original upvote was just a "slip of the mouse"? I mean in particular if the "retraction" takes place more than 24h after the last upvote and several hours after the last edit ...? $\endgroup$– DilatonCommented Jan 18, 2012 at 20:18
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5$\begingroup$ It would be polite to leave an explanation when you retract a vote, but it's certainly not required. $\endgroup$– David Z ModCommented Jan 18, 2012 at 21:05
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$\begingroup$ Then the question is, should the interface foster this? should a message appear when un-voting to prompt users to comment? $\endgroup$ Commented Apr 30, 2012 at 14:05
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$\begingroup$ @episanty: that could be something to suggest on Meta Stack Exchange. I'm not sure how well it would be received; the community has rejected the idea of requiring users to comment when downvoting many times, but given that there is a little popup notification reminding users to comment when they downvote, it might make sense to have the same thing when they retract an upvote. $\endgroup$– David Z ModCommented Apr 30, 2012 at 15:18