Maybe sooner than we think. I was blown away by the implications of MS labs PhotoSynth potentially represents. It’s shared context using data that we humans understand : pictures. More than just Flickr with Google Earth and other daily mashups, these kinds of technologies might turbo charge our participation economy like never before.
Now just think of this for audio and cross reference that with time and space. The possibilities are just emerging as we think of realizable business and service models to get people outside of the connected few in wealthy countries to participate. I’m brewing up a few ideas, how about you?