1. 1 A British Library / Klokan Technologies partnership Crowdsourcing map data Kimberly C. Kowal, Lead Curator Digital Mapping, The British Library

2. 2 Quick Facts 725 maps assigned spatial metadata 13-18 February 2012 90 participants Publicity minimal – social media *key* Top five participants completed half the work Data quality good:.005

3. 3 Ordnance Surveyors Drawing 40(detail). British Library, Maps OSD 40(3). What is georeferencing?

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5. 5 Ordnance Survey drawings Original large-scale drawings made for the famous one-inch- to-the-mile maps. England and Wales, 1780-1840. Part of Staffordshire Containing 100 Square Miles Surveyed by Mr Field and Drawn by Mr Stevens (detail). Pen and ink on paper. 1817. British Library shelfmark: OSD 210. Crace Collection of maps of London BAYNARDS CASTLE AND FARINGDON WARD WITHIN with their Divisions into Parishes according to a new SURVEY. (detail). Cole, B. engraver. 1754. British Library shelfmark: Maps Crace VIII.25 Illustrating development of the city and its immediate vicinity from ca 1570 - 1860

6. 6 http://maps.bl.uk

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17. 17 Competitive Crowdsourcing

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19. 19 Remaining… Correcting errors Data management Engaging participants: thanking / feedback Preparations for next lot of maps – within the next month! Continued improvements to application

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22. 22 What made it work… Content relevant Accessibility and convenience of application paramount Activity engaging Immediate results and feedback Competitive crowdsourcing tools Recognition and visible overall contribution