Criteria for rating LCD monitor quality

On the above question, I upvoted a couple of answers with 0 vote count and the count was not incremented, but the uparrow highlighted.

Being confused by this I clicked the upvote again and the count changed to -1.

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That's probably just someone else downvoting at the same time as you upvoted. When your upvote was in place (arrow highlighted) the two cancelled each other out, leading to a total of 0. When you then undid your vote, it went down to -1.

EDIT: In particular, if you mean Jonathan Sampson's answer, he has indeed received a downvote for it.

  • I don't think you can downvote a comment Jon. – TheTXI Jul 16 '09 at 18:50
  • 1
    nevermind, miscommunication between the OP and my face. – TheTXI Jul 16 '09 at 18:51
  • I've edited the body to make it clearer :) – Jon Skeet Jul 16 '09 at 18:52

Jon has it right that someone else probably just downvoted at the same time.

Also, remember that the upvote arrow is like a toggle. Each time you click it it switches states (on or off).

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