This document discusses Facebook's new Graph Search feature and some privacy concerns it raises. Graph Search allows users to search for connections between people, interests, locations, and other information shared on Facebook. However, the document notes that surprising amounts of personal data can now be discovered about users and their connections through Graph Search. A number of privacy issues are raised, such as whether public data should be blurred, if users know their data is public, and the potential for personal data to be linked and extrapolated in unintended ways.