Five years on, people are really struggling to archive your tweets

140 characters doesn't sound like much, but when half a billion tweets are sent daily it's almost impossible to keep up. That's the conclusion of a researcher tracking the progress of an attempt by the US Library of Congress to archive the entirety of Twitter.The Library made the pledge in 2010, back when the microblogging network was a smaller fish. Even then, there was already a four-year backlog of 21 billion tweets - each with more than 100 bits of metadata accompanying its 140 characters.Ac