As of April 2012, 53% of American adults age 65 and older use the internet or email. Though these adults are still less likely than all other age groups to use the internet, the latest data represent the first time that half of seniors are going online. After several years of very little growth among this group, these gains are significant. As of February 2012, one third (34%) of internet users age 65 and older use social networking sites such as Facebook, and 18% do so on a typical day. By comparison, email use continues to be the bedrock of online communications for seniors. As of August 2011, 86% of internet users age 65 and older use email, with 48% doing so on a typical day.
http://pewinternet.org/Reports/2012/Older-adults-and-internet-use.aspx
