Captain Morgan has launched a new digital effort with agency MRM Worldwide as part of the rum brand's multiagency "Calling all captains" campaign. MRM Worldwide created a customizable voicemail tool, which allows consumers to set up Captain Morgan-branded prank calls. From the Web site www.CallingAllCaptains.com, consumers can choose from three personas — the cute girl, the angry boyfriend or the unpaid bartender — to make the call.