I think it's like what I used wave for soon after it launched. Let's say you're coming up with a business plan with your friends to pitch for VC money and you're putting your thoughts together. You add in your stuff the wave. Others add their stuff. If somebody has an epiphany later, they can add it then. A week or two later you'd have a document with everybody's thoughts in one place that you can run through and compile a slideshow.

I wonder if I got that right.

Anyway, great blogpost!