In watching companies run a lot of marketplaces, we've noticed that a key success factor is to have a healthy bit of back and forth in the discussion threads associated with each question. While many players are competitive and want to be accurate predictors, most of us are also social animals and like to engage in a good back and forth. We decided to build on this and introduce the ability to JUST start a discussion thread on its own without being associated with a question.
Publishing a discussion is a familiar process. You are asked the topic/question you'd like people to discuss, fill out some details and any background information you'd like to provide and submit for publication. The discussions themselves look just like the discussion threads we already have so they'll be familiar to everyone.