| http://www.w3.org/ns/prov#value | - In a classic study of the power of online communications, social networking sites such as Twitter will be used both by protesters of the G20 meeting in London and by law enforcement to monitor the protesters:Marina Pepper, one of the organizers of G20 Meltdown, said that Twitter, the blogging tool that allows short updates to be filed, published and read via cellphones, would be used to coordinat
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