Back in my day, we didn't have any of these fancy real-time-mashups. If you wanted to mash up, you'd show up at the person's front door, pull out a map, and point at things.
Wonder what we'll be saying down the road...."in my day, we didn't have these fancy neuron teleporters. If you wanted to mash up, you'd use Twitter or Google Wave." Some young hacker would look up, scratch his head, ask, "What's Google?"