Should have a 2012 in it. Can someone clarify something for me. The GPS part gets talked about a lot in these articles, but it's never been clear why. Does Google go as far as putting a GPS receiver in <i>every</i> server? If not, what is so special about this? (People have been using GPS as a time source on networks for decades. But the way articles talk about it, this is super-duper novel.)