How to drive 100% more Twitter engagement: http://venturebeat.com/2012/11/30/thinglink-this-is-how-brands-are-driving-100-more-twitter-engagement/
US spent 37% more time on social media in 2012: http://blog.nielsen.com/nielsenwire/global/social-media-report-2012-social-media-comes-of-age
NPR studies how to improve local engagement: http://www.niemanlab.org/2012/11/what-kinds-of-local-stories-drive-engagement-the-results-of-an-npr-facebook-experiment/
Facebook in talks to buy #2 paid iOS app: http://techcrunch.com/2012/12/02/whats-up-with-whatsapp-facebook-might-want-to-buy-it-thats-what/
And the top five "likeable" business of 2012: http://www.prnewswire.com/news-releases/the-five-most-likeable-companies-of-2012-181829241.html