Pew Research Center Staff

15% of American adults do not use the internet at all, and another 9% of adults use the internet but not at home. The main reasons they cite for not using the internet are relevance, usability, cost and access.

Half of cell owners download apps to their phones and 48% listen to music services. Video calling has tripled since 2011, while texting remains a popular activity.

With 91% of all Americans now owning a cell phone, 57% of all American adults are cell internet users. The proportion of cell owners who use their phone to go online has doubled since 2009.

30% of social media users now tag their posts with their location, while 74% of smartphone owners get directions or other information based on their current location and 12% use a geosocial service to “check in” to locations or share their whereabouts with friends.

86% of adult internet users have taken steps to avoid online surveillance by other people or organizations. Despite precautions, 21% of online adults have had an email or social media account hijacked and 11% have had vital information stolen.

Some 70% of American adults ages 18 and older have a high-speed broadband connection at home as of May 2013, according to a nationally representative survey by the Pew Research Center’s Internet & American Life Project.

As teens gain access to mobile devices, they have embraced app downloading. But many teen apps users have taken steps to uninstall or avoid apps over concern about their privacy.

94% of teen social media users said they had a Facebook profile, and 81% said that Facebook is the profile they use most often.

Teens often rely on themselves and the guidance they get from the websites they use to figure out how to manage their privacy online – but when they do seek advice, as 70% of them have at some point, they go primarily to peers and parents.

Today, 72% of online adults use social networking sites. Although younger adults continue to be the most likely social media users, one of the more striking stories about the social networking population has been the growth among older internet users in recent years.