I'll use Gogobot as an example. From the home page of the app, the user can click the "Trending" link, to navigate to the trending page. In this workflow, the icon in the top left becomes a back/up ...
Does anyone know of the story behind this specific UI? I mean I get the base 2 vs base 10 math but whichever route you pick, shouldn't there be consistency? Or is there a story behind this? 2^30 vs ...