I'm back from my honeymoon, newly espoused and ready to write about node.
I was surprised to discover that justjs went down during my absence. My VPS was rebooted, 11 days ago. And it seems mongodb won't restart from an unexpected shutdown without a little manual intervention when journaling is not in the mix. Speaking of which, I really should be running MongoDB on a 64-bit system; but for the justjs app it isn't really necessary, so long as I understand its quirks (like this one).
Sorry about the interruption. I'll be writing more soon!