Adults are much less likely than teens to have a profile on a social network website. About three in ten (35%) adult internet users age 18 and older have a profile on a social networking site like MySpace, Facebook or LinkedIn. Meanwhile, teenagers are roughly twice as likely as adults to use these sites: among teens 12 to 17 years old, 65% have a profile on an online social network.⁴  Despite comparatively lower levels of social network use, usage of social network sites by adults has increased markedly over the past four years.

Back in February of 2005, just 8% of adult internet users had used a social network site. That percentage had risen to 16% by August of 2006, and as of December 2008 stands at 35% of online adults.

The use of social networks on any given day is also on the rise. In February 2005, just 2% of adult internet users had visited an online social network “yesterday” while 19% of adult internet users had done so in December 2008.

Social network users⁵ are equally likely to be men and women, and are also more likely to be young: 75% of online adults between ages 18 and 24 have a social network profile, as do 57% of wired adults between 25 and 34. Profile ownership drops to 30% among 35-44 year olds, 19% among 45-54 year olds, 10% among 55 to 64 year olds and 7% of online adults 65 and older. Similarly, social network users are also more likely to be students — 68% of full time students and 71% of part-time students have a social network profile, while just 28% of adults who are not students use social networks. Whites are less likely than African-Americans or Hispanics to have a profile on an online social network. Nearly one third 31% of online white adults have a social networking profile, compared with 43% of African-Americans and 48% of Hispanics.