I notice that there are some free third party apps that will make it possible to use the iPod/iPhone as a wireless flash drive. Given that they use the wifi network and the Internet, is there any way to be sure the app doesn't 'call home' and send a copy of whatever documents you're transferring back to e.g. Moscow or Lagos for some unscrupulous mafia types to trawl through for personal information? (apologies to any Russians or Nigerians who may resent the aspersions).