Details at http://openbiblio.net/challenge/
Challenge from the Open Knowledge Foundation
Got datasets from
        British Library (http://ckan.net/package/jiscopenbib-bl_bnb-1)
        Cambridge University Library (http://ckan.net/package/jiscopenbib-cul-1)
        IUCr dataset (http://ckan.net/package/iucr-acta-cryst-e)
You can enter challenge with just an idea as well as a development
Post ideas to http://ideas.okfn.org/ tagged with ‘openbiblio-challenge’

Example (not an entry into competition) – http://benosteen.com/timemap.index