The rule in the '80s and early '90s was never ever exchange floppy disks with anybody and never insert other people's floppy disks in your PC. Enter the LAN and the USB sticks, problem solved. Not.

I'm afraid we have to go back to exchanging files over the LAN. Or turn on our WiFi cards in hotspot mode and create a LAN ourselves. There are going to be good opportunities for desktop and mobile apps. Obviously Evernote and Dropbox are already here but they are not exactly the same thing.