"witfal" ... "Mark A" :
Actually, if anyone's connection is left open, the signal would be so weak for outsiders, that it wouldn't really be worth it. If you have wireless capability on your computer, the point is that it's high-speed (never heard of dial-up wireless), so I can't see using another person's connection as being worth it.
Additionally, I haven't seen an open, non-commercial connection in ages. Who is so stupid, that they open up their wireless connection, rather than use the encryption that comes with the router software? Anyone who does, deserves to be ripped off.
:-P
Natalie