Business application for sharing business resources. Every big corporate have number of fixed computers with a lot of storage (P2P) and processing resources (Cloud computing). Why not using them together to make it bigger storage and process CPUs. Time shift in the world can help them to use idle resources from one to an other place.
This is some thing where Google, IBM and others are currently working. But in my opinion a new startup could gain the market much faster and easier as compare to big giants due to lack of innovations in the big companies.