This free service is AT&Ts way of saying that iPhone users use too much of AT&Ts data network and they want to unload that data onto traditional landlines.
BTW iansltx, I have been to Fredericksburg, nice little town!
Thanks, though if you came here with a 3G iPhone you'd be disappointed...nothing but EDGE for AT&T for miles, thought that should change in a few quarters. Nuthin' but EvDO