This comment is a test. Just now on another post I clicked (on busy.org) the "reply" icon, posted the reply, and it was top-posted, rather than a reply.
Just now I figured I'd try opening this post in a new tab, and see if my comment would remain under the comment I was replying to. It did!
So, I went back to the original tab and clicked the post again, and am responding to the same comment. Let's see what happens...
Huh. Perhaps busy.org had a temporary glitch, or temporary code change... Looks like replies are working again. Cheers!