It's hard to tell, but if they have been influenced by that post, then considering the lack of adequate reception of the post in the first place, this probably didn't improve their understanding of my comments, and has perhaps even worsened it.

Also, I don't claim to be anywhere near the ideal of optimizing for feedback in practice. After all, "When vanity is not prompting us, we have little to say." But I would certainly change my posting patterns if I were convinced that it would improve feedback.

I also don't think that low returns from top-level posts are a general rule -- it's probably mainly due to my lack of writing skills (particularly in English) that results in more readable and cogent writing when I'm confined to the shorter space and pre-established context of a comment.

(Although, on the other hand, one general problem is the lack of any clear and agreed-upon policy for what is on-topic for LW, which makes me, and I suspect also many other people, reluctant to start discussions about some topics, but ready to follow up when others have already opened them and found a positive reception.)