I've seen several posts lately about "borrowing" the neighbors Wi-Fi signal. Here is something that describes the consequences, it's a must read for wireless networking users.
Benjamin Smith III and Gregory Straszkiewicz both were arrested for allegedly stealing something no one could see, hear, or feel. That thing was valuable enough for victims to press charges in both cases. But the arrests were over something many consumers throw out their windows every day: a Wi-Fi signal.
http://www.pcworld.com/news/article/0,aid,122153,00.asp
And...
Does Your Wi-Fi Hotspot Have an Evil Twin?
Identity thieves are going wireless in their quest to steal your personal info.
http://www.pcworld.com/news/article/0,aid,120054,00.asp

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