The Pew Research Center's Internet and American Life Project found that people were more likely to use basic privacy features in 2011 than they were in 2009.
The study found that 37 percent of people have untagged photos.
The biggest increase was among those who have unfriended someone.
Sixty-three percent of people said they had done that.
Researchers also say women are significantly more likely to use privacy settings than men.
