According to Mashable one government agency, the Interior Department, has Instragram figured out. This image is of the super moon in late June. "Beautiful photo of the #Moon over #TurretArch in #Arches National Park last night." Take a look at their site, see the number of views and comments, and make your own assessment. Don't the images make you want to visit some of these places? And maybe submit a photo to their summer contest? Notice that the contest is posted on the White House blog. Interior has a news page, but I don't find a blog. The White House would probably have more followers anyway!
Their Instagram page has over 50,000 followers, another testimony to the power of the channel. And their social media concentration on Instagram suggests a good understanding of the channels available.