I wrote this piece in 2013, after Google Reader had its plug pulled. I'm guessing most people who read that piece have no idea what I'm talking about, because most don't think about online systems as defining a base of content they can move around. Think of it this way. Imagine if you couldn't fly into one city, you had to take a train, but to another city you had to fly, there was no train. The obvious thing would be to build a train route to the city without one, and do the same for air. #