It's a question I've been pondering a lot lately. Technically, children under the age of 13 are not allowed to join Facebook. But according to a Consumer Reports in May, 7.5 million children 12 and younger are already on the site. Currently, federal law prohibits websites from collecting personal data from children without parental permission. The Children's Online Privacy Protection Act, or COPPA, as it is more commonly known, has been in effect since 1998, but has not been updated since.