I don't have a problem with this law actually. Of course it depends on what the network is; e.g. public hot spot offered by a shop or cafe.

If I park outside your house on the street and freeload off your network to surf hotasianbabes.com, or to download warez, you should be pissed off and you should call the cops. Even my mom, who is the most un-techie person imaginable would know what you are doing and call the cops on you. War Driving is just not an uber-31337 h4x0r secret anymore. So kiss it goodbye unless you are doing an official audit for someone who is paying you to poke at their network.

We can get all sticky about signal ranges and such, but it is still stealing a connection from somebody who is paying for it, no matter how you slice it.

-- spurious