24.1mm tweets sent out during (and about) the Super Bowl: http://blog.twitter.com/2013/02/the-super-tweets-of-sb47.html
On the fraility of social networks: http://venturebeat.com/2013/02/02/7-reasons-you-cant-take-social-networks-for-granted/
Myspace's mistake: http://techcrunch.com/2013/02/02/myspace-squandered-the-only-thing-it-had-left/
Social media advertising increasing in 2013: http://mediadecoder.blogs.nytimes.com/2013/01/29/report-gauges-companies-approach-to-advertising-on-social-media/?src=recg
How urban travel is like social business: http://pro.gigaom.com/blog/how-is-social-business-like-urban-traffic/