Pretty sure every comment starts at 1. A downvote puts you to 0, or lose 1 karma. An upvote brings you to 2, or gain 1 karma. Also, I believe there's some addit

Pretty sure every comment starts at 1. A downvote puts you to 0, or lose 1 karma. An upvote brings you to 2, or gain 1 karma. Also, I believe there's some additional karma earned for replies to your comments/submissions.