What was the moment when Twitter was first brought to your attention? When did you realise that Twitter was something important?

For many people, the Hudson River plane crash was Twitter’s tipping point, when the of-the-moment and on-the-spot reporting medium that Twitter provided to anybody – critically, not just the mass media – allowed iPhone owner Janis Krums to take a photograph that was rapidly shared around the Twitterverse. And the rest, as they say, is history.

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