5% Cash Back on Gas from Costco's True Earnings Amex Card

[This post is written and copyrighted by FIRE Finance (http://firefinance.blogspot.com).]Amex along with Costco is offering a great cash back / rewards card for small business owners - True Earnings Business Card. With gas prices increasing every other day, this card lures us with a 5% cash back on gas purchases. Other attractive incentives include 3% cash back for dining out and 2% on travel