there's a post and there are replies attached to it. I'm not changing anything about posts, only that replies can now be voted on and can't be boosted or favorited. so when you click on the post, the replies are threaded and ranked. posts still flow LIFO and can be boosted. clearer?
maybe we do something with hashtags too so that when you've clicked on one (treating them like a subreddit), posts can surface based on algos we somehow decide, but that's separate for now.