Indeed... why risk losing your own Internet account when you could use someone else's and bring spamcop down on their heads? It might not be worth trying very hard to find an open wireless network, but if you know where one is, and you're a spammer, it's gotta be a no-brainer. I used to be able to get on someone's WAN from where I worked and it was all I could do to keep myself from printing porn on laser printers all over the country. (Open the Chooser, pick a city zone, select one of a dozen laser printers that appear, then print...) And I'm a nice guy, it's just THAT tempting. Imagine how tempting it is for people who aren't so nice.