The glaring usability issue for me was deleting a post.<p>Swiping doesn't work, nor are clues provided in detail view. The answer is that the delete button is hidden inside the Smiley Face/Like button, which was not intuitive to me. After all, if I want to delete a post I obviously don't like it and won't think to look there. As a caveat to what this article says, it would be better for swipe to be reappropriated to the expected behavior. This is going to be more of an issue if more apps adopt under-tableview navigation.