This deployment guide assumes you're using an Ubuntu server, and are either self-hosting or using an Infrastructure as a Service (IaaS) provider, such as Amazon Web Services or Rackspace. Your Ubuntu server needs to be running a daemon for launching other apps, for which we recommend the Upstart service. You can find more about Upstart with the following links:
Upstart - Getting Started
Getting Started with Upstart Scripts on Ubuntu
UbuntuBootupHowTo
Upstart Intro, Cookbook, and Best Practices
Run NodeJS As a Service on Ubuntu Karmic