what would be amazing would be a resurgence of the old style forums, but where users could choose to see a flat or tree view of a discussion (and even customize those views, e.g. the tree could be reddit style without subject lines, or slashdot style with them)
SwedeSpeed has this. It is a forum, posts have threads. It isn’t always nice because the threading/three view also breaks the sense of time and makes it harder to see new posts.
I actually prefer a linear view with posts that quote what they want to reply to. This also allows a single post to reply and combine multiple remarks. So it allows more for convergence instead of divergence as with a tree.
right, i agree with you - there's no one size fits all. that's why the best thing would be to let the reader toggle views on any given post/thread. one could even experiment with fancier views like a flat layout but with a git tree like sidebar that shows the perhaps multiple parents for any post and support for clicking on a post and popping up a mini thread with just the posts it's replying to.