Treehugger wrote this morning about a small device, the size of a pack of cigarettes. It is a kind-of very small PC(it includes some CPU, USB ports, DVI output...) and has to be plugged in an Ethernet LAN.
It is LAN powered only - no need of other energy source - it can be plugged anywhere in your network. USB ports allow to plug what you want on it: keyboard, usb key, mouse...
In a server environment, those devices will allow people to execute distant apps, via thin client installed (like Citrix or Microsoft Internet Explorer).
This means that to execute simple apps, you no longer need to deploy and maintain expensive hardware. Of course, there is no hard drive, but you can save your work on the network or plug an usb key to save your data.
Could be very useful in schools, libraries, municipalities, shops... where you only have to access to remote info or to remote applications.
The french Minitel is back!