I just thought of a feature I'd like included in a future version of Mac OS X. If anyone else could make use of it, I'll submit it to Apple. Anyway, here's what I thought would come in handy: Normally, if you drag a file from one folder on a disk to another folder on that same disk, the file gets moved. You can force a copy by holding down Option as you drag. However, if you drag a file from one disk to another disk, the file is normally copied. Holding down the Option key as you drag doesn't do anything different - what I'd like is to be able to force a move (making the little plus symbol next to the mouse disappear, as it does for moves) by holding Option while dragging.