Mary Guedon of the group Raging Grannies holds a sign as she protests outside of the Facebook headquarters June 4, 2010 in Palo Alto, California. Facebook users began sharing more private data after the social network giant revamped its policies and interface, according to a study released Tuesday.
Mary Guedon holds a sign as she protests outside of the Facebook headquarters June 4, 2010 in Palo Alto, California
