The post-lunch keynote at AoIR 2012 is by Liesbet van Zoonen, who begins with a recap of cultural theories of identity. These assume both individual and collective identities to be multiple rather than single, dynamic rather than static. Identity is something we do, not something we are. Research has been informed by these ideas, and we have a good understanding of how different groups use media to perform their identities. This has also been reflected in an understanding of diversity as a desirable goal for social policy.