Web 2.0 allows us to share things better:
Self-service > enable sharing. We all have needs to share stuff. Power drills are used for 10 minutes during their lifetime; cars are used for a few minutes a day; the result is huge inefficiencies in consumption. "The notion of sharing material resources is just exploding," particularly in Europe. People are designing sharing systems for space, equipment, time, services.

Via IFTF