Go-iPhone users: Unless you are an "original iPhone with a Pick Your Plan" Customer with the required unlimited Data Plan for iPhone, you might want to give AT&T a call. Otherwise, expect to see a service interruption. Erica Sadun found out the hard way (via SMS of course) that her Go-iPhone is no longer approved to run on AT&T's network. What?! You wanted more than 4 days notice? Welcome to the new AT&T.
Oh, btw, we're pretty sure Erica knows a few ways to get around AT&T :D