war driving, good or bad?
Wardriving is driving around and hack into someones network that yo pick up, and then you can do whatever you want with it.
http://en.wikipedia.org/wiki/Wardriving
Wardriving is the act of searching for Wi-Fi wireless networks by a person in a moving vehicle, using a portable computer or PDA.
Software for wardriving is freely available on the Internet, notably NetStumbler for Windows, Kismet or SWScanner for Linux, FreeBSD, NetBSD, OpenBSD, DragonFly BSD, and Solaris, and KisMac for Macintosh. There are also homebrew wardriving applications for handheld game consoles that support Wi-fi, such as sniff_jazzbox/wardive for the Nintendo DS, Road Dog for the Sony PSP, WiFi-Where for the iPhone, and G-MoN and Wardrive for the Android operating system and WlanPollution for Symbian NokiaS60 devices. There also exists a mode within Metal Gear Solid: Portable Ops for the Sony PSP (wherein the player is able to find new comrades by searching for wireless access points) which can be used to wardrive. Treasure World for the DS is a commercial game in which gameplay wholly revolves around wardriving.