Dear Kate,

The local Dunkin Donuts offers free coffee for NC State home game wins.  It's awesome. Whenever I see the coupon pop up on my phone, I think, "Woo hoo!  Poor Dunkin Donuts.  They don't realize that I'm just using them for free coffee.  How do they make money with awesome free coffee coupons?"

Then as I drive away with my free coffee and the donut I added on because I felt guilty about just getting free coffee, I have my answer.

"Free coffee - no purchase necessary!*"

Love,
Bora

*I mean, it's not necessary... if you don't mind walking around with a guilty conscience all day.