I can’t confirm it on their corporate site, but Starbucks is supposedly giving away coffee tomorrow for Earth Day. To get the free coffee, you just have to show up with your own to-go mug.

They gave it away a few weeks ago too during their “Great American Coffee Break” promotion.

My theory is that Starbucks is about to start following Google’s example. Sometime in the next few weeks they’ll announce that they’re going to start giving the coffee away for free and they’ll pay for it by putting ads on the side of the cup tailored to your personal coffee drinking habits.

(That sort of idea makes me glad I don’t drink coffee!!!)