Ask pg: Should I be more active on HN?

We're working on building a pretty cool startup (if I do say so myself) and will be applying to the summer HN batch. I've noticed that YC people (especially pg) are saying that activity on HN is a good way to raise visibility for your application [0 (also one of his essays, can't figure out which one)]. Like usual, there's no statistics, so I'm asking here.

I'm not very active on HN, using it to drive attention to my blog [1] and the occasional comment. I've got complete confidence that we'll be accepted if we can make it to the interview, but I'm a bit worried about standing out among the thousands of other applicants to make it to the interview.

Should I spend more time saying "smart things" on HN? I'd rather work on improving our startup but my priority is getting YC's attention.

Essentially, is the extra visibility provided by commenting worth the time now to get the benefit of YC later?

[0] http://news.ycombinator.com/item?id=4133608

[1] http://recoding.blogspot.com