My initial reaction was also "just bring em back". With reflection, I think a good idea might be to show the score after you vote. This way you get the feelin

My initial reaction was also "just bring em back". With reflection, I think a good idea might be to show the score after you vote. This way you get the feeling of making some difference i.e. immediate feedback, but also the knowledge that your vote wasn't subconsciously affected by a visible score beforehand. The main downside of this would be people voting out of curiosity to see what a comments current score is. Perhaps displaying the score of a comment once it reaches a certain age (maybe three or four days old) would mitigate against this.