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The current set of social networking platforms, eg Facebook and MySpace, has created a new class of Internet applications called social software. These systems focus on leveraging the real life relationships of people and augment them with the facilities and the richness of the Web. However, social platforms and software are not without drawbacks and significant concerns. One of the most important considerations is the need to allow strong security and privacy protections. In addition, these protections need to be easy to use and apply uniformly across platforms and applications. This paper provides a first step in resolving these issues.