Just Be Considerate (Score 1)

Using up someone's bandwidth may not be polite. However, I use my connection at home for downloading, web browsing, etc. But when I am out and I need to download something, I jump on the closest network and remote into my computer at home to download whatever it is that I want. That way once I start it and disconnect from my home computer, I am no longer using there bandwidth. Using someone elses network is just a convenience thing for me like checking my email on the go. If you are causing problems by using the open network, such as hacking, then yeah, put them away, but if you just need to check a last minute auction on Ebay, or your email, I can't think of anyone that I know who would care if you use their open network. And if they do care, they probably have it locked anyway.