Thanks, looks like it's back up now. Google didn't appear to have a cached copy; it kept giving me a 503.

A top link on HN must send an enormous amount of traffic...has anyone ran a study as to how many hits it generates? I'm guessing a couple hundred thousand if it stays on the front page for a day.

Your estimate's an order of magnitude too high in my experience. More like 10-30,000 visits if you stay on the front page most of the day. Many submissions don't stay highly ranked that long either.