Are you a library hack too? Perhaps you are and don’t know it. There are ‘library hacks’ who are still discovering the power of good research and resources, and then there are ‘library hacks’ who are using these to take data, images, maps, or objects in exciting new directions. This presentation will touch on both of these definitions. There are many tools available through the web to help create and visualise information and libraries are great untapped repositories of it, whereby many are using library data to create new content. The Libraryhack competition run by the National State Libraries of Australasia early in 2011 brought many great ideas and creations to the surface. It also provided an opportunity to explore how mash-ups and data visualisations make content powerful and rich. Hear how library hacking might just be what your collections need to generate a new wave of community engagement.