I'd say it's stealing if they break in through your security, but if you've got it wide open I don't mind jumping on if I'm by with a laptop or PDA. A lot of people go to the local compu-mart and get a wireless router, take it home, plug it in and wow "I've got wireless" and that's it. they don't bother with setting up the security because it's too confusing. most of the time the average user isn't even going to notice that someone else is on their network. this is getting into the whole digital domain debate, I look at it like someone playing the radio in the car. if you don't want others listening to what you're playing, roll up the windows and turn it down otherwise don't complain when others listen to your radio.