Presentation on the OLnet evidence hub and approaches to finding and sharing evidence of the impact of OER. This version first presented at the ICDE 24th conference in Bali 4 October 2011. Related links: Cloudworks: http://cloudworks.ac.uk/cloud/view/5800 YouTube: http://www.youtube.com/watch?v=Oo3xPyoiwYg Conference: http://www.ut.ac.id/icde2011/ CC-BY