Ok...well the update happened already. I'm surprised it was so early, since the imminent update was announced yesterday.

Now there is a reputaion and points system. Beside each post you will see a + and a - sign. I'm not completely sure how it works yet, but I've tested it out on a few messages. Basically if there's a post somehow negative to someone or something, click on the - sign. If that post is positive in some way, click on the + sign. You don't always have to vote.