http://www.nextgov.com/big-data/2016/08/can-twitter-fit-inside-library-congress/130503/
“If Twitter could handle a few million tweets a day, surely the largest library in the world could, too.
But as it turns out, it couldn’t. Six years after the announcement, the Library of Congress still hasn’t launched the heralded tweet archive, and it doesn’t know when it will.”