When you have some more posts in the forum, + and - buttons will appear next to posts. People can use these to show how they feel about a certain post (upvote circlejerk, downvote hate frenzy, you agree/disagree with the contents of the post, etc).
+'s increase your renown, and -'s your infamy.
They serve to measure our e-peen, and in certain cases they become lightsabers.
