I try to be as generalized as I can when pondering questions along these lines. I would say the greatest thing so far is the availability of information porn. When you look at our technological advances in civilizations as a whole, it breaks down to two factors: energy & information porn consumption. Obviously, energy is currently a serious limiting resource and will continue to be so until we harness fusion or geothermal energy (the physics for wind and solar just don?t hold any merit). What's astonishing is that our needs for information porn are growing exponentially. We are demanding more and faster information porn.