Not to mention that I'm not really aware of all that many open Wifi networks just hanging around these days. In fact, I'm currently in Italy, where it's actuall

Not to mention that I'm not really aware of all that many open Wifi networks just hanging around these days. In fact, I'm currently in Italy, where it's actually illegal to leave your access point unencrypted and open to everyone. (It's a real pain, hence why I'm on 3.5G right now). That would seem to be the biggest barrier to entry.