Considering the heavy female demographic happening on Pinterest, we were surprised to find the U.S. Army had a well-stocked profile, until we checked out the rest of their online goings-on. The Army is all up on the Internet. And, in a very active way -- it doesn't just have social media profiles to have its hand in the future. It has robust profiles on various sites, ranging from the big social media players like Twitter to newbs like Pinterest, each appropriately using the platform as a PR tool. ...