It'll sit behind a pylons app in the near future, most likely.
Making a website-as-service for making linux livecds is something I've wanted to do for a while, and the few projects out there that do it do it poorly, imo.
I had the start of something like this using Ubuntu a while ago, but frankly there's not much more room on the Ubuntu isos, and it's kinda a pain to make sure you're generating them correctly.
Arch is such a simple distro that it's easy to automate. The node.js app is pretty much just a wrapper over mkarchiso, but if that didn't exist it wouldn't be too hard to write.
Other than that, preparing for an interview at a sweet-looking company in Cleveland tomorrow, and finishing up some stuff at my current place of employment.