Pew Internet & American Life Project
Social Media and Mobile Internet Use Among Teens and Young Adults
Amanda Lenhart, Kristen Purcell, Aaron Smith, and Kathryn Zickuhr
February 3, 2010

You can find the full report here.

Pew Research has produced two new reports on statistical findings surrounding the use of social media amongst the age groups of teens 12-17 and for adults 18 and older.

Among the findings for teens ages 12-17:

• 14% of online teens ages 12-17 now say they blog, down from 28% of teen internet users in 2006.
• 73% of online teens now use social networking websites, up from 55% in November 2006 and 65% in February 2008.
• 8% of internet users ages 12-17 use Twitter.  This is in stark contrast to 66% of teens using text messages, and 62% of teens going online for news and political information.
• 58% of 12 year olds now own a cell phone up from 18% in 2004.

Among the finding for adults ages 18-up:

• Among social networking sites, Facebook is the most popular with 73% of adults having a profile, with only 48% and 14% having a profile on MySpace and LinkedIn, respectively.
• 47% of adults use some type of social networking site, up from 37% in November 2008.
• 81% of adults between the ages of 18 to 29 use wireless Internet.  Only 63% of 30-49 year olds and only 34% of those 50 and up have access to the Internet wirelessly.
• Roughly 33% of all 18-29 year olds online lead the way in status updating on Twitter or similar.

You can find the full report here.