Perhaps a more reasonable middle ground can be found: only show the scores after a person votes, a la Slashdot's "you can't comment and moderate in the same sto

Perhaps a more reasonable middle ground can be found: only show the scores after a person votes, a la Slashdot's "you can't comment and moderate in the same story/thread". You avoid groupthink and pissing contests, but you allow someone to see the community response by contributing to the community first.