When it comes to protecting the privacy of their children, US parents give social networks a failing grade.

在保护孩子的隐私方面，美国父母认为社交网络做得不合格。

Three out of four parents polled by Zogby International believe social networks are not doing a good job of protecting kids' online privacy.

Three out of four parents polled by Zogby International believe social networks are not doing a good job of protecting kids' online privacy.

The survey was conducted for Common Sense Media, a nonprofit organization dedicated¹ to helping² families navigate³（驾驶，操纵） the world of media and technology.

Ninety-two percent of parents said they are concerned that children share too much information online, and 85 percent said they are more concerned about online privacy than they were five years ago.

The poll found a great deal of concern about geo-location services which pinpoint⁴（准确描述） someone's whereabouts（下落，行踪） .

Ninety-one percent of parents said search engines and social networking sites should not be able to share the physical location of children with other companies until parents give authorization⁵.

"The poll results present a clear divide between the industry's view of privacy and the opinion of parents and kids," Common Sense Media chief executive and founder⁶ James Steyer said.

"American families are deeply worried about how their personal information is being used by technology and online companies, yet the companies appear to be keeping their heads deep in the sand," Steyer said.

Technology companies need to step up but parents, children, schools and government also need to do more, he said.

"Parents and kids have to educate themselves about how to protect their information," he said. "Schools should teach all students and their parents about privacy protection."

"And finally, policymakers（政策制定者） have to update privacy policies for the 21st century," he said.

According to the Zogby poll, more than 60 percent of parents want the US Congress to update online privacy laws for children and teenagers.

Zogby polled 2,100 adults in August. The poll has a margin⁷ of error（误差幅度） of plus or minus 2.2 percentage points.