is it illegal to steal?
duh
it shouldnt be, cause people are so clueless when setting up wireless networks its almost asking you to surf their networks. they keep their whole lan open.
you could walk downtown toronto with a laptop and just surf any big companies network, cause 75% of them are insecure.
most of them have hired consultants at 200$/hour to come and secure it.
live in a very populated area, i doubt you would even have to buy internet, just use someone elses