eloquence, I dislike a few aspects of the #Discourse forum #UX, especially the relentless gamification of banal user actions ("Congratulations, you just made your first poop") and its approach to categories.
I have to admit, though, that it also gets many things right, which you only really notice if you spend a lot of time with a Discourse forum. The read/post experience is quite relaxing, and the UX for keeping up with new new posts, notifications, etc. seems solid.