I attended a great Android Meetup tonight by the Silicon Valley Android Developers Meetup (which, amazingly, has over 1,800 members).  There were several presenters tonight.  The first was Siamak Ashrafi, who talked about Augmented Reality and described the differences between Augmented Reality with GPS Markers vs. Fiduciary Markers.  You can find his presentation slides here.  The slides also have a few great videos showing AR off.  This Android group has recently created a forum for Android developers in Silicon Valley.

Frank Maker then gave a talk about Mobile Energy Consumption and ways to use software to decrease energy consumption.  That video is also below.

Siamak Ashrafi Augmented Reality Video: