Think your neighbor is surfing on your dime, connecting to your wireless network without permission? Our recommendation would be to encrypt your transmissions, using WPA, to keep him out altogether. That way, you not only avoid the load on your bandwidth, but also the liability problems that could occur if he uses your network for hacking, launching attacks, downloading child porn or other illegal activities. But we have to admit that the solution used by the author of this web site is a lot more creative: http://www.ex-parrot.com/~pete/upside-down-ternet.html