Stats of the Day. An almost bewildering number of stats on social media use, but it's in 'bite-sized' chunks so easy to understand as well as useful. Posted 7 Dec 2011 - res. 576 x 5264 [Duplicate of my post on Social Media Infographics Board, but with original link this time]
The Startup Ecosystem: Tech Roles Compared [Infographic]
This infographic on social media ROI points out some interesting stats on social media use in marketing. It also demonstrates some of the shortcomings in how companies analyze social media effectiveness.