See Jon Schull's weblog for a definition: http://radio.weblogs.com/0104369/2003/03/14.html
Copied my favorite parts are below. Source website was cluttery and difficult to read/processs. -- DanRasmussen
- If you have a hard drive, (a) cache recent, frequent, critical, or locally relevant content (b) deliver it to Users and to neighbor wifiboxes (at top speed, and without imposing on the internet backend) (c) present an introductory homepage to users who happen by telling them where they are, what they can do, and how they can get help, and how they can help.
- Accept firmware and content updates from trusted neighbors and trusted users, local and remote.
- When given power, "just work".