If all moderators vote unanimously to block or allow a post, we show this post to all other moderators. When you make a decision on such a posts, you see whether your decision was aligned with the other moderators. If you decide with the majority, you will gain karma and the knowledge that you are an awesome moderator! If you decide against the majority, your rank will go down in our moderation system.
If you believe the unanimous decision was wrong, you can challenge the decision. Before doing so, make sure you checked our guidelines. All challenged decisions will be reviewed and, if need be, corrected. This helps us curate our moderation system and our moderators while making sure there are no mistakes.