I like it. There is no annual fee, and you get cash back on purchases. I'm pretty sure its 1 percent on everything and 3 percent on your top 3 categories (to a maximum of only 12 dollars per month on the top 3 categories). That adds up slowly, but if you let the rewards go until you have 200 dollars, you can redeem for a 250 check, thats what makes it worth it to me.
We charge EVERYTHING, and pay in full every month, so it does add up fairly fast.