Source: http://www.mikogo.com/2013/03/25/evolution-of-communication-infographic/
Related posts:
Visualizing the US/China Trade Relationship
The Story (so far) of the Apple Tablet
Travel and Tourism Expenditures in America [Infographic]
Tron Cars
Interactive - Comparison of notable earthquakes
State of the Internet: Summing up 2010 [Infographic]
Patent Evil [Infographic]
The Best Countries for Doing Business in 2012 [Infographic]
Too Late To Start - A timeline infographic of founder age
History of Metals Infographic