Has Robert Downey, Jr. yelled "Booyah! at you and thanked you for inviting him over yet? If not, you are probably among those who haven't tried out Esquire Magazine's new augmented reality issue. Augmented reality - a technique for adding layers of digital information to real-world objects -- is just one of the advanced digital technologies magazine publishers are embracing in a bid to get readers and advertisers excited about print again.