I'm sitting in a Starbucks typing this on my AT&T iPhone, which cannot connect to AT&T's wifi hotspot here... My observations really concern the US, for iPad users who cannot tether: 1) Cellular iPads do not hold their value. You pay $130 extra for cellular capability but you'll be lucky to recover $30 of that selling used. 2) Cellular iPad data is relatively cheap IF you have a shared data plan or can get away with using 200MB a month or less on T-Mobile. 3) If you NEED a reliable, high-speed data connection while out and about, free public wif-fi hotspots just don't cut it. The bandwidth isn't there. The fastest I have found is at Target (I downloaded an HD movie while shopping there once, in less that an hour). 4) Public wi-fi can be difficult to connect to. If you cannot connect, you have no recourse.