I'm looking for something a bit like stackoverflow but in the form of threads. Basically, how I imagine this working is that you set a forum to be a Q&A forum. This then means that any thread posted has an upvote/downvote option on the thread. As a secondary, but less important feature, an option to upvote and downvote replies. I've had a look through the resource manage but cant find anything like this - does such an addon exist yet, or do I need to make it myself?