Congrats on the growth. I think you're going through some growth technology problems as well?. I find the responsiveness of HN has changed for the worse. I notice the main page doesn't respond sometimes and trying to check out the submissions for top leaders / heavy users yields no results. Just an observation.
those numbers are pretty good, although the ratio is lower than I expected. 12 page views per user, per month? I view more than that while I eat my breakfast.
http://ycombinator.com/images/hntraffic-16dec09.png
The reason pageviews peaked in Aug is that we got better then at shutting down over-aggressive crawlers. The big spike in uniques was when the HN thread about _why became the de facto condolence page for the whole web.