Mountain View, Calif. - Google has added the ability for certain users to add comments to the stories from 4,500 sources it aggregates on its Google News service -- namely, those individuals or groups who are mentioned in the stories. Unlike Digg, another news aggregation site where users can comment on and rank stories, prospective commenters on Google News stories must e-mail their comments to Google, along with proof of identity. The company will then try to independently assess the identity of the individual.

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