Information is power, and telecommunication unites us across vast distances. Too bad we put all of that stuff on the Internet, right? When society collapses and the zombies roam the streets, will the World Wide Web collapse into ruins as well?
Surprisingly enough, the answer is "no." Data hosts around the world have taken their servers deep underground -- into the sort of bunkers normally reserved for Earth's seed wealth and the British royal family.
Norway's Green Mountain Data System holds up in a former munitions storage site, protected from electromagnetic pulses and fire. The data center uses hydroelectric energy for power and depends on water from a fjord that's close by to cool everything down [source: Hudson]. Sweden's Pionen Data Center is a former military command center buried deep in the heart of a mountain, fortified enough to withstand a thermonuclear bomb. It's cooling system depends on mountain water and naturally cool mountain temperatures.
So, even if the world as we know descends into a living hell of atomic firestorms and mutant war bands, the few human survivors will still have the power to vandalize the Wikipedia article about it all.