Having just returned from summerschool and seen how MAIPR students presented their dissertations on posters and wishing there was something closer to the spatial arrangement of ideas than powerpoint offers reminded me of a web-based programme that goes some way to addressing this. It's called Prezi and you can find it here - http://prezi.com/index/
Students/Teachers get a special (free) licence that gives you more storage space and the ability to build your presentation offline. Am hoping to use it for a presentation in a week's time so I'll report back on how it goes.