Hi, author here. While building this thing, the Node server had the tendency to drop out. I'm monitoring it with God (http://god.rubyforge.org/) now, so it restarts whenever anything goes wrong.
I'm genuinely impressed by how it's holding out now. :)
What kind of traffic have you gotten in the last hour?
Could you elaborate on this at all? What kind of traffic are you getting (max concurrent requests handled perhaps)? Any idea why Node dropped out?