Former MoveOn.org executive director Eli Pariser isn't so sure that the Internet is breaking down information barriers. In his new book "The Filter Bubble," he writes of a hidden rise of personalization on the web and how it limits the information we access. This information, he suggests, then becomes our own unique web universe, or "filter bubble."
Examining 'The Filter Bubble'
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Eli Pariser, author and board president of MoveOn.org