Forrester Research discusses paid, owned, and earned media

Forrester Research discusses paid, owned, and earned media --
http://blogs.forrester.com/interactive_marketing/2009/12/defining-earned-owned-and-paid-media.html

Social Media Strategic Plan

This is another interesting graphic that I pulled from Dell's Social Media for Business Facebook page:
https://www.facebook.com/photo.php?fbid=10151330925812874&set=a.10150334031542874.342422.27714187873&type=1&permPage=1

Age distribution on social networks & online communities

This is an interesting graphic that I pulled from Dell's Social Media for Business Facebook page:

https://www.facebook.com/photo.php?fbid=10151326949972874&set=a.10150334031542874.342422.27714187873&type=1&permPage=1

Social Media ROI

Calculating Social Media ROI is always a challenge.  The following Search Engine Post provides some great insights.
http://searchenginewatch.com/article/2249515/Social-Media-ROI-14-Formulas-to-Measure-Social-Media-Benefits