[layer8]

I meant both posts within a thread and threads within the forum. Reddit makes it hard to track a discussion within a thread and also tracking new threads vs. read threads vs. previously read threads but with new posts, or picking up a half-read thread later on.

[BrenBarn]

Discourse seems to be a modern forum platform that handles a good deal of that. The tricky thing is paying for it, including configuring it and/or paying someone to do that.