This document discusses privacy issues related to social networks. It notes that 55% of teens have online profiles sharing full names, photos, and friends' photos, while 46% post fake information and 49% use social networks to make friends. Questions are raised about who owns users' data, how easy it is to modify or delete, and what standards or regulations will be adopted regarding data usage and privacy. The document encourages users to be careful about privacy without becoming obsessed and provides some useful links on related research and discussions.