Courtesy notice- When you downvote people who claim their downvotes (i.e. they say that they downvoted and give the reason why) you don't discourage downvoting, you discourage the claiming of downvotes.

Personally, I appreciate people claiming downvotes even when I disagree with them, because I know that whenever I see the little number on the upper-right of my page go down, I always wish I knew why. I'm sure that there are others that dislike the claiming of downvotes, but I get the feeling that some people might just not have thought about it too hard before they downvoted (hence this notice).

So even though I disagreed with zir, I upvoted Rhwawn's claiming of a downvote (Edit: Currently sitting at -3), but also upvoted SkyDK's rebuttal (which I DO agree with). I would like to encourage other people who appreciate people claiming downvotes to do the same.