13. This Year on Twitter
http://blog.twitter.com/2012/12/this-year-on-twitter.html https://2012.twitter.com/
14. Rutgers University Professors Mor Naaman and Jeffrey Boase
analyzed the content and characteristics of social media activity.
80% of users are "meformers“, 40% of tweets „me updates“ /2009
http://mashable.com/2009/09/29/meformers/
15. In August 2009, Pear Analytics published a similar report, dividing
tweets into six categories:
http://knowyourmeme.com/memes/sites/twitter
16. A study by sociologists at Cornell University published in
September 2011 used Twitter to help determine when people are
the happiest.