AT&T customers can get 1,000 FREE rollover minutes!
Just text the word "yes" to 11113020. You'll get a confirmation text right back. It will take approximately 4 weeks for the FREE minutes to post to your account.
This was immediately intended for iPhone users, but there are tons of reports that it's working for all AT&T customers (I don't have AT&T or I'd try it myself)! Let us know if it works for you!