I'm pretty sure "cloud" is actually (presently) the most abused word in IT. Recent Microsoft ads would have us believe that remoting to a desktop over the Internet and photo editing are now all possible thanks to the cloud. And execs talk about putting web apps and email in the cloud--what we used to just call hosting things on da Internet. There are few words as misunderstood as cloud right now.

For what its worth, my employer (in Washington D.C.) has their own Blackberry Enterprise Server (an on-site server that interfaces directly with corporate mail systems), and it appears to be unaffected by this outage.