Someone stealing bandwidth wirelessly from your internet connection? Don't get mad (or encrypted) - get even. This article has been available for some time, but it still amuses me and almost makes me wish someone would crack into my wireless network. Almost.
Pete Stevens documented how he handled his thieving neighbours, proxying their web traffic and making changes to it. Favourite countermeasures include turning images upside down or blurring them automatically. It shouldn't be too hard to run pages through The Dialectizer to produce Cockney, Jive or Swedish Chef versions.