Source  http://blog.socialcast.com/
Related posts:
The Boom of Social Sites [Infographic]
Powering our online obsession [Infographic]
Visual Timeline - The Most Iconic Electronic Gadgets of all Time
By The Numbers: Our Very Connected, Always-On World
TopBits Tech Anticipations for 2011
The Changing Shapes of Air Power [Infographic]
2011: The Year in Names [Infographic]
Google+ for Business [Infographic]
Just How Big is Apple [Infographic]
The Most Profitable Industry in All 50 U.S. States