VirtueDesktops

I was in my Physics II lecture yesterday and I saw a guy with his MacBook who was apparently just as bored as I was because he was just surfing the web and checking his email. I noticed that he was switching between windows very much like how some Linux distro's use glx to manipulate the window server. Confused? Okay: VirtueDesktops is a FREE program that lets you have many virtual desktops that can be used for extra desktop space and is a functionality that Apple's new OS update Leopard will have built in, Apple calls it Spaces.