Guinness QR Cup

We've seen our fair share of QR codes in every possible configuration, but this has got to be the coolest I've seen in a while.  

The Guinness QR Cup reveals itself only when the dark beer is poured into it.  Once there, the entire cup becomes your personal portal to all things social media!

As per the Guiness QR Cup graphic, upon scanning the cup with yourt smart phone, "it tweets about your pint, updates your facebook status, checks you in via 4 square, downloads coupons and promotions, invites your friends to join, and even launches exclusive Guiness content."

Talk about engaging your consumer.