By 
James Surowiecki
 | 
TED Stage Talk

The power and the danger of online crowds

James Surowiecki pinpoints the moment when social media became an equal player in the world of news-gathering: the 2005 tsunami, when YouTube video, blogs, IMs and txts carried the news -- and preserved moving personal stories from the tragedy.

Related tags:

culture
entertainment
media
social change
social media
technology
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