Slides for "Why do we need data portals?" shown during EuroGeoSource seminar on 2013-03-12. More information at http://www.eurogeosource.eu/public-workshops/2013-brussels
The slides might be lacking context, so keep posted for a video update.
Image credits are linked from every slide.
If you want to get on the technical side of the slides, they''re just a clone of the https://github.com/hakimel/reveal.js library.