Windows 8 has all new metro style start screen. The metro styled desktop of windows 8 is called start screen. You will see apps or applications or programs shortcut on the start screen of windows 8.
You can easily manage start screen apps or programs icons / shortcuts.
To add a program / app on start screen, you have to PIN that app.
To remove an app from start screen, you have to unpin that app.
After you have Un-pinned this app, it will not appear on the desktop in windows 8 metro UI.