From 10 Takeaways from Mobile Madness 2013: Ads, Games, M2M, and More:

Mobile Madness 2013 (image: Dan Bricklin)
Mobile Madness 2013 (image: Dan Bricklin)

March 19, 2013, Microsoft NERD, Cambridge, MA. Photo by Dan Bricklin (www.bricklin.com)