I don't know if this has been posted yet, but I know a lot of people (such as myself) were wondering how to tell the difference between the AT&T Franchises and authorized resellers.
http://hosted.ap.org/dynamic/stories/A/ATT_IPHONE?SITE=ORBAK&SECTION=HOME&TEMPLATE=DEFAULT
http://hosted.ap.org/dynamic/stories/A/ATT_IPHONE?SITE=ORBAK&SECTION=HOME&TEMPLATE=DEFAULT
Cook said the AT&T-owned stores are branded that way, whereas other franchise outlets still carry the Cingular name.