Alex Rodriguez is one of the greatest players in baseball history. Jennifer Lopez is the flyest of the Fly Girls. Together, they've become the power couple of Instagram. They're so popular, in fact, that their recent engagement photos drew 15 million likes and 325,000 comments on the photo-sharing platform, despite being, well, pretty terrible photos. That's because Instagram users, by and large, are not photography lovers. They are voyeurs.  [More...]