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I see an entry for a forum app in the list of future features. If somebody has already started coding one, here's an idea.
Current forum applications present a very static UX. Even Vanilla, which is used to power this forum, feels the same way. http://discourse.org is trying to change that. I've been using it for several months now and I can tell you that it presents a much better UX than anything out there. It's not perfect, but this project is only a few months old.
I was thinking that building a forum app with the same features as Discourse will be really cool. I'm not a coder, so contributing code is out of the question, but Ratchet could be used to provide the real-time features.