So the title is a tad weird, but that's because Starbucks is offering a slightly unusual offer today though Friday. Since “small acts of civility … make a big difference,” Starbucks will give you a free tall coffee if you buy a drink for somebody else in line.
Yes, it sounds counter-intuitive, and you're not really getting a free coffee. But somebody else in line will! And since you're already standing there to buy coffee anyway (at least I hope that's why you're standing in line. Otherwise we need to talk), why not “pay it forward” and make somebody smile?
I love it.