What is the point of a personal virtual world(Opensim) server like the Sim-OnDemand and what is the point of running it off Amazon Infrastructure?
One interesting answer is Visualization.
Well, here is a screen shot that illustrates visualization of ListMania related books of a given book.
Slicing and dicing data visually and collaboratively is one application for a personal virtual world. And Opensim with little python code can be very handy in that front.