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Re:Tower.js - JavaScript Framework for Node.js modeled after... by jeswin on Monday February 27, 2012 @10:27PM (#3641754)
In my three years of being on this website, I haven't had to downvote anything except spam or deliberate trolling. And that too, rarely.

Maybe it is a good idea to have the value of downvotes diminish the more you use them.

Re:Tower.js - JavaScript Framework for Node.js modeled after... by zalew on Monday February 27, 2012 @11:21PM (#3641867)
Second that. Before maybe about half a year ago, I rarely observed downvotes on comments that are not rude, worthless, ot totally offtopic. Now the fluctuation of up/downvotes on comments (including mine) got out of hand and people use it to 'disagree'. It's stupid. I wouldn't mind if pg removed downvoting at all.
Re:Tower.js - JavaScript Framework for Node.js modeled after... by pooriaazimi on Monday February 27, 2012 @10:55PM (#3641821)
I think of downvotes as opposite of upvotes. If you agree with the gist of a comment and find it informative or useful, you upvote it. If you really disagree, you downvote it (and if possible, drop a line to say why you disagree). If I'm wrong and that's not the way things are being done here, I apologize from OP.

I think another way could be to decrease a users karma by 1 for every 5 downvotes he makes... and also limit the number of downvotes a user can make in a day.