the biggest issue with reddit/digg/hackernews style comments is how top comments can be gamed for profit. old forums had the problem of "first" and "bump" comments, but steering the conversation was harder.
This sounds poetic, but makes no sense to me. I've been here for a few years and I regularly post comments. I still have almost no idea which ones will be up-voted. However, I do know which ones will be down-voted. So tell us, how do you write a comment that can be "gamed for profit"?
Exactly. The "tree" part you can argue whether it's good or bad. The "upvote" part is universally bad. The fact that upvotes bump comments while downvotes will completely hide then... It's just terrible for discussion, and the reason reddit consistently devolves into echo chambers with everybody agreeing with everybody and piling on whoever doesn't.
Reddit lets you sort by Best (default), Top (highest raw score), New/Old (chronological), and also Controversial - no add-on required. It's right above the first comment.
"Best" is a time-weighted blend of scoring, so that well-voted but late contributions are more likely to be visible despite fewer overall votes. Certainly not perfect, but helps bias away from "first to comment wins"
Except that most people just go with best. Tons of new comments are shouted into the void, never to be heard by anyone except for a handful of the curious.
Discord threads are just an addon on top of a chat. It's not really a real discussion. And the discord discussions (or whatever it is called) are again flat IIRC? Slack threads are flat. Both are chat platforms first and foremost I would say.
