"Whats the use of Facebook? Well, we use Facebook to host our tutorial videos. In the absence of server space, Facebooks video hosting capability is a handy way keep them organized. And the resolution is pretty good, too." – via WEB4LIB

"Apps.gov makes cloud-based IT services (which includes Google Apps) available for purchase to all federal agencies and is an all-in-one store front designed to make the purchase and adoption of cloud computing services common place.
The Apps.gov mall is a pretty impressive marketplace for federal cloud computing services. The modern IT store includes business applications, cloud IT services, productivity apps, and even social media apps for the extra trendy federal agencies. Interestingly enough, Google Apps are made available for purchase. Some of the social media apps officially advocated include Disqus, Facebook, TwitVid, Flickr, YouTube, Scribd, and other recognizable social media sites consumers have already come to appreciate"