On the whole, this article is pretty good, but I keep seeing this floppy disc argument being flogged over and over, and I just don’t think it has any merit. Nobody has ever produced any hard numbers on it, so I’m just as likely to think that everybody who sees floppy disc icon is just going to think, there’s that weird square pattern that has always meant “save.”
But really, the solution seems to be solving itself. When was the last time you even saw a “save” button? Google Docs auto-saves. With OSX Lion, Apple will automatically restore unsaved open documents.
Microsoft’s Office is the only example I can think of, and they’re a company who are just as unlikely to ditch it from their interface as they are to change a tried and true icon that everybody still recognizes despite its origin now being obsolete.