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It's not the first time that happened, but for example yesterday I answered a question. It was accepted with 3 upvotes. Someone ask to get some explanation so he can learn from it. I edit my post and gave an explanation. Since I edited my post I got a downvote with no explanation.

Is this the right way to encourage people to share knowledge?

What can Stack Overflow do to prevent such things, or force people to explain why they downvote?

It's very discouraging.

Edit: As referred to in an answer or in a comment I have misunderstood the downvote and a removed vote by a user.

So the interesting discussion in Encouraging people to explain down-votes.

share|improve this question
which question? – giorgian Mar 9 '10 at 8:49
There will be jealous people on SO, just as there are jealous people in real life, but I don't think they're a big problem in SO. For a discussion on encouraging people to explain down-votes see my question here -… – ChrisF Mar 9 '10 at 9:04
+1 @ChrisF thanks for the usefull links to another discussion – user143906 Mar 9 '10 at 9:10
There are no downvotes on that answer – HAL 9000 Mar 9 '10 at 9:18
@Yacoby Thanks i haven`t see the difference between a removed vote and a down vote – user143906 Mar 9 '10 at 9:26
up vote 5 down vote accepted

That answer doesn't have any downvotes at all - it has two upvotes and no downvotes. Looks like someone who previously upvoted you removed their upvotes.

share|improve this answer
+1 Didn't see the difference. Thanks. – user143906 Mar 9 '10 at 9:22
@user It's also possible that the user that upvoted you deleted their account (or it was automatically purged), removing the vote - not necessarily someone deliberately removing the vote from your answer. – Jared Harley Mar 9 '10 at 9:47

Are there jealous people within Stack Overflow ?

Of course. Stackoverflow, just like Soylent Green, is made of people.

share|improve this answer
And just like Soylent Green, both are delicious... – Adam Davis Mar 9 '10 at 15:05
+1 - My uncle was an extra in that movie (one short scene did a close up of a bearded long haired guy with bulging eyes, that was him). – Tim Post Apr 9 '11 at 12:04
@Tim I vote you find the scene, screen cap it, take a picture of yourself making the same face, and post both online for our amusement. (tl;dr pics or it didn't happen) – Adam Davis Apr 9 '11 at 13:14
that comment was very reddit-oriented – juan Apr 9 '11 at 15:58
and it's only 11 years to go until solyent green time (movie set in 2022).... – user147272 May 12 '11 at 23:15

We're all, to various degrees, jealous of Jon Skeet. But it's not his reputation that we covet, it's the bunny slippers of doom

share|improve this answer
needz more pics ;-) – fretje May 13 '11 at 10:58

Yes, of course there are.

People like votes, points, badges... I'd like a ton of points, but I know I don't have the time or expertise.

I'd've liked it if my first answer had've got accepted, but it didn't. I've reached 92 votes, and I'm jealous of people who have answers with 100. I'm not going to downvote others unless I have a technical reason. But some might, and such is life.

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