Or even better: if you copy something whilst holding down the "option" key, the old format will be deleted. (So you would press "cmd + option + c" instead of simply "cmd + c"... come to think of it, this should really be a tip on its own ;)

greeting!

Greg

This doesn't work for me. I'm using a three year old MacBook Pro with 10.6.6. I've reset my System Preferences>Keyboard Shortcuts to the defaults. <Command-Option-c> doesn't put the selected text into the clipboard for me. I've tested copying from and to various combinations of Safari, TextEdit, Word 2004, and Nisus Writer Pro. When I switch to the Finder, and choose Edit>Show Clipboard, it shows the last item that I had copied using the standard <Command-c>. Attempting to paste in any of the above applications just pastes the previous copied text (with attributes), rather than what I attempted to copy with <Command-Option-c>.

What am I missing?