From @stevecla comes news of this excellent deep-zoom-y experience for OneNote called Canvas. It’s a bit like pptPlex for PowerPoint but in this case for exploring your various notebooks. If you’re a OneNote junkie like me, then it is definitely worth a look-see.

I like the timeline view. I still think there is a lot of work in this space – particularly for collaborative research – but this is an interesting start for my general notes.