Avoid Discourse.org forum like reboot product "Discourse"
Discourse.org has a forum-like reincarnation product called Discourse. Unfortunately it is extremely unstable, has a long chain of dependencies that make it very fragile, the founders and the community are lacking in support abilities, the documentation is very lacking.
Maybe after they have had a few years to mature the product, maybe in 3 to 5 years, it will be worth reevaluating. More details for those wanting more technical in depth information: http://techtalkhawke.com/news/discord-with-discourse