In this Pew Internet sample, 79% of American adults said they used the internet and nearly half of adults (47%), or 59% of internet users, say they use at least one of SNS. This is close to double the 26% of adults (34% of internet users) who used a SNS in 2008. Among other things, this means the average age of adult-SNS users has shifted from 33 in 2008 to 38 in 2010. Over half of all adult SNS users are now over the age of 35. Some 56% of SNS users now are female.
Facebook dominates the SNS space in this survey: 92% of SNS users are on Facebook; 29% use MySpace, 18% used LinkedIn and 13% use Twitter.