I have a new 13" MBA that I carry with me everywhere in my backpack, because I don't have a car, I don't know where I will be or for how long! Recently, I found myself waiting at a Books-A-Million and I figured they would have wifi there, but I realized that you have to either have a club card ($20/year) or pay for the day ($5). Anyways, I turned it on anyways, and got online NO problem at all, it took me to the 'main' books-a-million page, but as if I was already signed into the network? I tried to get online with my ipod touch and had no such luck, it redirected me straight to the 'sign in' page. Any idea as to how this happened? Any way the network administrator could have some how set it up to only allow macs on for free...? I asked several people around me if they were online, and if they had to log in or if it just 'let them on' and every one of them said they had to log in and/or pay and were VERY upset that I didn't!