Engadget posted an article about GSM turning 20 years old today.
having moved to Verizon....i really miss not being able to swap my sim card from device to device. (also not being able to use my phone in australia with a local sim card).
cdma sucks in regard to this.
having said that ATT sucks worse....so stuck with verizon for now but i'd change back to gsm just for these features.