Tumblr themes have evolved along numerous, sometimes mutually exclusive paths. Text-oriented themes for writers, for instance, have revolutionized the mutli-panel template, with innumerable design houses offering unique takes on the blog-in-a-blog concept (among myriad others). But photography and photojournalism have always pushed developers to reinvent wheels faster than other creative fields. While a still image persists in one state indefinitely, its presentation always reflects the latest programming paradigm–and the world of microblogging is a perfect microcosm of this incessant, inventive re-presentation.