I’ve wanted a tethering option for my iPhone since 2007, when I waited in line to buy an EDGE-based first-generation iPhone. I upgraded to the iPhone 3G, of course, and I’m still wanting and waiting for tethering. Why? Because I’m the kind of customer who is just mobile enough to need Internet access for my laptop several times a year in places that aren’t WiFi handy — but not often enough to make shelling out for a dedicated USB dongle and service plan worthwhile.