http://idlewords.com/bt14.htm#america
"And speaking of California, let me try another tack.
This festive map shows seismic hazard in Northern California, where pretty much all the large Internet companies are based, along with a zillion startups. The ones that aren't here have their headquarters in an even deadlier zone up in Cascadia.
Now of course, each company has four zillion datacenters, backed up across the world. But how much will that matter when there's a major quake, and Silicon Valley can't get to work for a month? All of these headquarters are going to be shut down for a long time when the Big One comes. You're going to notice it.
So even if you don't agree with my politics, maybe you'll agree with my geology. Let's not build a vast, distributed global network only to put everything in one place!"