1. A method comprising: displaying in an interface of a mobile device a listing of content items arranged in a vertical direction on a touch screen display of the mobile device, at least one of the content items comprising a set of objects arranged in a horizontal direction and only partially displayed on the display screen; receiving a vertical scrolling user input over the listing, the vertical scrolling user input comprising a vertical swipe on the display of the mobile device; responsive to the vertical scrolling user input, scrolling the listing on the display vertically; receiving a horizontal scrolling user input comprising a horizontal swipe on the display of the mobile device; and responsive to the horizontal scrolling user input being over the set of objects, scrolling the objects on the display horizontally.