The news that Facebook might be considering a membership option for children under 13 is garnering plenty of reaction from parents and online safety advocates. Many underage kids are using Facebook already, often with their parent’s help. A recent Consumer Reports study estimated that 7.5 million children under 13 are already using the social network.

Even among the parents who knew about their kids’ Facebook accounts, only 18% had friended them — which would be one of the most basic steps you can take to monitor your kids’ Facebook useage. Facebook is well aware of the problem. The company told Mashable in a statement: “recent reports have highlighted just how difficult it is to enforce age restrictions on the Internet, especially when parents want their children to access online content and services.”