The Evolution of Social Media infographic by Digital Marketing Agency MediaVision is getting some play. As a good infographic should, this one tells a story by combining text and graphics at-a-glance. 

This reminds me of one of my favorite (early) infographics of all time, The Conversation Prism. Brian Solis has been updating this summary of sites and tools since 2008. Now in its four rendition, the infographic puts "You" in the middle of social media.

 Discussion Starters: 

• Which principles for creating infographics discussed in Chapter 9 do these two graphics follow? 
• Compare the first version of the Conversation Prism to the current one. What has changed? 
• What, if anything, surprises you about the Evolution infographic choices?