There is a referral program for AT&T, where both the referrer and the referred get a $25 gift card to spend on AT&T (which you can use to pay your bill). If you're interested, I'd be happy to refer you. There is a (very old) thread here about that, too... search for "cingular." The referral program is still in place. It's not miles, but it's not nothing. (The iPhone does qualify.)