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A new survey from the Pew Internet and American Life Project looks at the use of web filters by American families. Filters are software packages parents can install on a home computer. They are designed to prevent access by children to certain web content. They can also prevent certain activities, like sending out personal information or participating in chat rooms. A basic filter like NetNanny, which parents can customize to their comfort level, costs about $40. Graphic: APM Image

Pew researcher Amanda Lenhart says filters have quickly become a fact of American life, since more than half of wired families now use them. (Jeff Horwich guest-hosts.)

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