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  1. 1., a crowd sourced Roman map RenéVoorburg, DH2014,The Hague
  2. 2. Introduction
  3. 3. location aware HTML5 static JSON data
  4. 4. Design considerations • When creating a database backend, why not opening it up for others to add / edit data? • If others provide data, why not help them to retrieve and access the data? • Wikipedia as a model, but maps central & multi-lingual • Map embeddable by other websites • Open JSON API, Pelagios RDF, downloads
  5. 5. Core functionality Users can add: • Markers (since February 2012) • Images (since May 2013) • KML line tracings (March 2014) .. but no real community supporting features as of yet.
  6. 6. User engagement
  7. 7. User engagement summarized • 200 activated user accounts • 68 users added markers • 6073 markers added by users • 90% of all markers were added by 9 users. ! (June 2014)
  8. 8. Discussion • How to attract users beyond NL, DE and BE? • What did the 132 users that only registered expect? • Populating the map ’enough’ appears to have been essential in engaging users • Will an investment in community features pay off? • Stuck in the middle between science and marketing?