Jack on the Square blog:

When Starbucks builds the Square Directory into their apps and in-store Digital Network, it gives Square new visibility, driving more customers to opt-in to Square. And with nearly 7,000 Starbucks stores soon accepting Square, these new payers will be able to find your business (including coffeehouses) and pay with their name, building community and creating value.

Wow, this is fantastic news for Square. Really big exposure for the little financial-startup-disrupter that could.

This will help Howard Schultz to eliminate the cash register. Payments of the mobile device, similar to the Apple Store, while people are waiting in line. He was talking about this for a long time.