See Slashdot for an example of how reputation systems tend to promote groupthink and uninformed speculation. (That said, without moderation the comments would surely be even worse.)
Posted Apr 11, 2010 9:28 UTC (Sun) by quotemstr (subscriber, #45331)
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I'm not quite sure that Slashdot's system is the best. There's a vast diversity in moderation systems, and not all of them necessarily seem to promote groupthink. Reddit's, for example, seems to function much better than Slashdot's.