Have you ever copied something to the clipboard that you don’t want to leave there in case somebody else is going to use your computer? Sure, you can copy something else to the clipboard real quick, but can’t you just make a shortcut or hotkey to clear it?
And of course you can, with the built-in clip.exe utility in Windows 7 or Vista (see conclusion regarding XP). It’s not really meant for clearing the clipboard, but with a little command line magic in a shortcut, we can make it do just that.