The Guardian has announced that it is ending its paper publication, and now publishing entirely on Twitter.

Sceptics have expressed concerns that 140 characters may be insufficient to capture the full breadth of meaningful human activity, but social media experts say the spread of Twitter encourages brevity, and that it ought to be possible to convey the gist of any message in a tweet.

For example, Martin Luther King's legendary 1963 speech on the steps of the Lincoln memorial appears in the Guardian's Twitterised archive as "I have a dream that my four little children will one day live in a nation where they will not be judged by the colour of their skin but by", eliminating the waffle and bluster of the original.