I haven't figured out how to comment on answers to questions yet, maybe they made it so you can't do that o.0 Or maybe it's just very well hidden o-o
I think @VA Va means replying to a reply. We may bring back that feature, but for now, lets see how it goes without it.
Oh on funadvice, I don't know. I'm using the respond/add reply box at the bottom of the question page for this reply.
By asking another question.