January 11, 2010 10:09 AM Globe Staff Dunkin’ Donuts, a company that so prizes brevity that it shortened the spelling of doughnuts to donuts, is launching a Twitter contest that challenges all hands to extol the virtues of its iced coffee in the tersest of tweets. “Beginning Jan.11, ‘followers’ of @DunkinDonuts on Twitter are invited to [...] Read more »