If you're a criminal who wants to do something from someone's IP, what's easier - (a) drive to their house, hack their wifi, and sit outside or (b) install a trojan on their computer and remote control it

I'm going to go for (b) personally. (a) would work, though!

Yes I agree, I wouldn't have come to the conclusion of option a originally if I had not watched a quite in-depth report on tv about it. It was quite unreal really how easy it was, they sat on a quiet suburb area, scanned for all the wireless networks and waiting for information to come in

All along, I've been hoping that the average person would start to take computers seriously and make an honest effort to learn what is going on with them... since the average person has started using computers throughout the day, unlike say, 1992.

However, this has not happened and indeed, people are pleased to obliviously broadcast their personal details across their neighborhood without even considering 'if I can pick this up, can my neighbor next door listen in?'. They'd probably figure it out if it was just a radio, right?

Security hazards of unsecured (or poorly secured, say WEP) wifi has been known for some time, of course. My current favorite is coffee shop that don't use AP isolation... nothing is more exciting than eavesdropping on students doing their nursing homework.