So I just got my new 12" iBook today (1.2 Ghz, 768MB, 80GB, Airport, BT). Hot damn I love this thing. Anyway, I downloaded MacStumbler and started driving around and there are wireless signals everywhere! I believe this is called wardrivng (?) My questions: 1) How secure is transferring data over the airport card. I mean, would you drive around, find a signal, and order something with your credit card? 2) I'm a poor student and am now thinking I can use this instead of buying internet service. Is this legal? It seems too easy. I'm a newbie here, so educate me. I don't want to do anything illegal. Thanks!