I vouched because nothing you said seems incorrect on its face, and i don't know enough to incorrect you. Someone else could; rather than no discussion.
It is good to know you no longer have to binhex mac stuff before zipping (and i assume tar, etc). That's why i sounded incredulous, even though the last time i used a mac the "install" was "drag this icon onto your hard drive icon"
I'm curious, if you have a disk/disc, and you drag a file onto the desktop, and eject the disk, does the file still disappear?