The Social Habit is a new study conducted by Edison Research and Arbitron, and is derived from the 19th Edison/Arbitron Internet and Multimedia Research Series, one of the longest-running studies of consumer adoption of the Internet and new media in existence.
This study was originally presented by Edison Vice President of Strategy Tom Webster at Blogworld in New York on May 25, 2011, and presented new, unreleased data for 2011 on America's adoption of social networking sites and services, with a detailed look at Facebook and Twitter usage, mobile social behavior, and location-based apps and services.
http://www.slideshare.net/webby2001/the-social-habit-2011-by-edison-research
http://www.edisonresearch.com/home/archives/2011/05/the_social_habit_2011.php