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Can anyone explain why my SO reputation just plummeted from just over 2,000 to 1,200? (User: ILMV).

  • I started with 1,997 points
  • Answered a question
  • Edited my answer a couple times
  • Received a up vote to put me to 2,007
  • Now I have 1,207 ?

Can anyone explain this?

Also if this is in the wrong area please move :-)

Edit

After Toms answer, is there a mod that can check if my score has been recalculated. Thanks :-)

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"...is there a mod that can..." Already done; refresh screen ;-p –  Marc Gravell Dec 30 '09 at 12:00

3 Answers 3

There is no "recalc" in your log (all such are fully logged), so I don't think it was this. I presume, then, another account (perhaps well-meaning) had up-voted your account so heavily and exclusively that it was seen as suspicious (automatically) and the votes cancelled.

This happens occasionally (very rarely), as an unfortunate side-effect of having a fanboy. Sorry 'bout that, but I suppose you should be flattered?

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19  
Which reminds me, we need to add a user history record when that happens. –  Jeff Atwood Dec 30 '09 at 11:58
6  
@Jeff - I'm surprised you don't do that already. –  ChrisF Dec 30 '09 at 12:04
    
Hmmm, not sure id I'm flattered really, but nevermind. Cheers for the response. –  Ben Everard Dec 30 '09 at 12:11

There's a thing called a rep recalc. It recalculates your Reputation, so deleted questions/answers, and fradulent votes don't count for or against you. Most people lose rep from a recalc - I just did it to myself on Meta and went from 3,975 to 3,859.

A SO mod might be able to see if your Rep got recalced - it can be triggered manually, or automatically by fraud algorithms, Account Mergers, and some other misc. things.

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Thanks for your answer Tom, much appreciated :-). –  Ben Everard Dec 30 '09 at 11:55
    
It wasn't an explicit recalc - log says "no". –  Marc Gravell Dec 30 '09 at 11:59

Your reputation graph says that you've never been above 1200. Not sure what that means if you really did have a score of 2000, but it is interesting, nonetheless.

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That probably indicates suspicious voting pattern removals, then. –  John Rudy Dec 30 '09 at 18:37
    
Well this sucks... I can't think why out of my relatively small reputation I could get 800 points via spammers. It would have been good if there was a definitive reason / log as to why this has happened. –  Ben Everard Dec 31 '09 at 0:16

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