Mac OS X Snow Leopard: The Missing Manual (Missing Manuals)

D.39. Floppy Disks

Floppy drives on Macs disappeared in about 1998. According to Apple, it's much more efficient to transfer files between machines using an Ethernet cable (Chapter 13), a CD that you burned (Chapter 11), or email (Chapter 20).

Of course, you can buy an external USB floppy drive for any Mac for about $45.