PICS (Platform for Internet Content Selection)
PICS is a W3C specification for describing the content of resources with a metadata label. PICS was originally designed as a way for parents and teachers to gain control over the Web sites and pages that children could access on the Internet. The PICS standards facilitate the following:
* Self-rating Content providers voluntarily label the content they create and distribute.
* Third-party rating Independent labeling services associate labels with content created by others. These services may devise their own labeling, and multiple services

