Thought that this might be a good read.
The Queensland Police fraud squad says it will be the first police force in the world to go on “wardriving” missions to warn homes and businesses if their wireless networks are not secure.
For more check this:http://www.smh.com.au/technology/security/the-great--wifi-robbery-police-to-patrol-down-your-street-20090721-drqb.html