From the Arab Spring to the Royal Wedding, the rescue of the Chilean miners to the fall of the News of the World and the London Riots, compelling tweet-by-tweet accounts freeze-frame the breaking of the biggest news stories of the past twelve months, alongside profiles of top tweeters, striking visual analysis and fascinating statistics.

In the year the 'micro-blogging' website celebrates its fifth anniversary, Twitter continues to grow at an incredible rate. A global phenomenon, there are now an estimated 200 million accounts around the world, with everyone from the British monarchy to Lady Gaga tweeting their perfectly formed 140 character messages. And it shows no sign of slowing down: during two hours on the night of Osama bin Laden's death, average activity peaked at a record-breaking 3,440 tweets per second.

The Twitter Year gathers together some of the funniest, sharpest and most insightful voices on Twitter to bring you a unique celebration of modern global communication.