An historic deal between Twitter and the United States Library of Congress will see more than 55 million daily tweets archived forever with everyone from the Dalai Lama to Prime Minister Kevin Rudd preserved in history. Queensland University of Technology (QUT) media and communications lecturer, Dr Stephen Harrington, said the deal with the world's largest library and America's oldest federal institution, was a mark that Twitter had won formal recognition as a valuable cultural legacy. QUT, 20 April 2010.