I appreciate all the tips. If you're curious, here's the deal: the offer is from American for the Aadvantage card, with 15K miles upon getting the card, and a 1 mile/$ transferred up to 10K miles with no fees. The APR isn't great -- 13.99% for regular, and only 9.99% APPR until Nov. 2004 and then 13.99% thereafter.

So it's not exactly a "great" deal but might be worth signing up for the AA miles (where I have 27K) and only to transfer a small balance that I'd be paying off anyway during the next month or so. For general purposes, the APR isn't great but it's on par with my Mileage Plus VISA and the annual fee ($50 for this vs. the $75 or so I've got with United) it might be worth looking to switch over to this one (UA and AA, in that order, are the programs I've got most miles in). We'll see... I may or may not pursue this, but thanks for your thorough input and help!